Malicious PDF — malware analysis report

Static analysis result for SHA-256 e582935ad027de80…

MALICIOUS

PDF

79.2 KB Created: 2021-09-07 22:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6b625708cc80ddcfc85dc84a6bb3f4dc SHA-1: 2e290472731add630487d011b2eaee8179887562 SHA-256: e582935ad027de804371295a4b90a10d216c9852e31ffdd505da6c281aea0571
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution campaign. The presence of 'utm_term=laptop price list 2019 pdf' in one URL hints at a lure to disguise the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • 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 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.
  • 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 http://marikitaberbagi.com/userfiles/file/22242675383.pdf In PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/0e93bf22e18e9c5692e12d62c1389104/35093506625.pdfIn PDF document text
    • https://eventaipei.com/upload/files/duwemesusexukulatekam.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a8750c3a0---28001939039.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/rilafebogupalobo.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/a58be4a20a3b028e8424aeb1fbfefdd0/38865261649.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/6b4fe388af7eb7085efb77f62884b88d/96111248350.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/kuzelebewewarudefaxigagov.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/hqnimm58ckge3rhf69b780ho5e/90616159138.pdfIn PDF document text
    • http://cpghollywood.com/userfiles/files/zurigogifimuvixigelar.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a11d4c2308---60687147179.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d7069a69a---pedem.pdfIn PDF document text
    • https://fresh-cherries.com/ckfinder/userfiles/files/narawifoxud.pdfIn PDF document text
    • http://kaies.net/upfiles/file/ludowoxinebonodazigoxor.pdfIn PDF document text
    • http://www.stemcellhairclinic.com/files/files/gaxezawibasajopuju.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/2f6c3d4afc34213649ca486ae2be62c1/88232780086.pdfIn PDF document text
    • https://keongracun.org/contents//files/jumarexubumeganarovu.pdfIn PDF document text
    • https://fajndoktor.cz/images/file/files/tumirujegiwekazojo.pdfIn PDF document text
    • http://rehahomecare.com/upload/editor/files/bivelubib.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc0da9dd58---25307187560.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/ruluwemozuwenazik.pdfIn PDF document text
    • http://finpacecuador.com/userfiles/file/31806927635.pdfIn PDF document text
    • http://assessmentinsight.com/ckfinder/userfiles/files/11658099194.pdfIn PDF document text
    • http://dailythang.com/userfiles/files/43513836918.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=laptop+price+list+2019+pdfPDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 17672 bytes
SHA-256: 1b68cd467c2ac72c81d85f35485c229105ac31811da0aed339256b329cbb26f2
font_01_sfnt_off0000fd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 10928 bytes
SHA-256: 514eb9f542a8a0d2103bd565f829fa679210c771a61a13c9bb775f8c13031815
font_02_sfnt_off0001170a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1