Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd701061037a221e…

MALICIOUS

PDF

96.9 KB Created: 2021-09-01 20:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9abef64702824859868d184e07357019 SHA-1: b4d8ee9f191e3835b0d144592637deb081aa9ec5 SHA-256: bd701061037a221e932b4d3bb9f52e9036a382da5d07e51c91542f100dc94d86
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to compromised websites and a visual download button, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading a secondary payload. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://inwebjor.ru/uplcv?utm_term=company+profile+cover+page+template+word PDF link annotation
    • http://singer-island-condos.com/userfiles/files/14421763665.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/0ce3b4446ac4cadfdaf69a5926417162/pifamuboti.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2021081319583473499.pdfIn PDF document text
    • http://www.retorika-zidar.si/ckfinder/ckeditor_uploaded_files/files/64986712129.pdfIn PDF document text
    • http://mylodge-naoshima.com/vetuduwonalowasix.pdfIn PDF document text
    • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/87310573382.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1610654f1dc7db---94441697235.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160975ef19dfca---lelaseralunutekumefebinez.pdfIn PDF document text
    • http://etoprosto.ru/ckfinder/userfiles/files/94741802413.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/161068ea0cd73f---vulidibetilemeponem.pdfIn PDF document text
    • https://designclarf.it/file/relaxozazenasujaxerogav.pdfIn PDF document text
    • https://leifs-auto.dk/images/file/72056766933.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/v943bj22lit43bs7np83firu03/78591605607.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e0aac0f4e---28719833649.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/8ti4rgchfk81qo43u7knlu9o86/xamub.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b4f8a591c77---lirawodum.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a25b70daa48---gizavujojegorasulemo.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/964292b70e97410c9e8048771f5269b3/worirofigizinakubojom.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed62c7060e---30797638323.pdfIn PDF document text
    • http://astro2sphere.com/admin/images/file/basadixepodirudijovifo.pdfIn PDF document text
    • http://irinaburmistrova.ru/files/49268755504.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20210803/21080319420213646410f0gr0com75.pdfIn PDF document text
    • http://www.blueoak.fr/image/file/povavozu.pdfIn PDF document text
    • http://www.firstpages.eu/app/webroot/files/userfiles/files/sonerufinafuvuwezi.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/13673368119.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C0 18060 bytes
SHA-256: 1ddb45dc7555b3f9c668328a61748890b6d6b0af9bb9bab026ba72258d60af35
font_01_sfnt_off000142b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AC8 11092 bytes
SHA-256: 81c92357041c7133c305f225b4ecdebe5cc6d06070e8502e8f823b7e45847f41

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