Malicious PDF — malware analysis report

Static analysis result for SHA-256 14468944654dbd1f…

MALICIOUS

PDF

85.7 KB Created: 2021-07-14 02:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: f663be9916a1d3446f20597b22228819 SHA-1: 3ad69a52fd19559559fffcf4f7de986772c25c74 SHA-256: 14468944654dbd1f417716005d131bfd69b150e7ff05cf73b1104ca30872c594
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and link farm patterns, suggesting it's designed to redirect users to potentially harmful websites. The presence of 'utm_term' in one of the URLs further supports a phishing or scam-related lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://crysiq.ru/uplcv?utm_term=purchase+manager+jobs PDF link annotation
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16075b902a56f9---delafisununar.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/jazebo.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fa43e775d---96420749772.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/kumixe.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/71897445246.pdfIn PDF document text
    • https://catwalkdogcome.com/editor_upload_image/file/gurobelokopotetisu.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/ce76c7e879ec1eca48fad32545462982/67450385170.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/webowali.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/e3ed44d3f01a06bf17fa32fc5e29f87b/fuwikas.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/9238188093.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/39628024656.pdfIn PDF document text
    • http://skybuildinfraprojects.com/uploads/ludasigilosexifodef.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/sofudake.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/alrp1gb9ce78h97hskp7mv5bef/94735053396.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/qei3ae2l6qbdolg7a5u3e7e3fs/39356678447.pdfIn PDF document text
    • http://51www.org/uploadfile/file/03bb5d1567db96df44b43313c18c9b56.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d40f34f39---46261571836.pdfIn PDF document text
    • http://praconsulgroup.ru/pict/file/mupawi.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f99742368a---93042172753.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/bc4512c578dddce434d45d9030d6b075/40402465860.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/gilirizawabafojole.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a13fbbec019---21545214067.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d91845a816d---9492347575.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16094807a4dfe5---kenitulozozupebiropi.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/p1enae8opo7srtu4669ji85m50/47209343764.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 17428 bytes
SHA-256: 26ede5bd68411ff3e8b3bd7292f3cbc0bf607236357d3effa8c9531dab2471a0
font_01_sfnt_off000118b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000130cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130CB 10812 bytes
SHA-256: c416ea2fa5d4da9bcb90feb226a5931cadab73365c4e6810c9fecc93fc4d0d90

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