Malicious PDF — malware analysis report

Static analysis result for SHA-256 06362dacb05d9c61…

MALICIOUS

PDF

85.4 KB Created: 2021-08-15 03:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: baae942100df0e17f5af10747ded3993 SHA-1: 2790f7b5f320bb63bf352ef352d4caa2d8d7507b SHA-256: 06362dacb05d9c614061aef82c4b34f07d44d569c7fb28e25d6648f571fb37d5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these links. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://garglob.ru/uplcv?utm_term=gta+san+andreas+ggmm+indir+full+gezginler
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/ae2b7e60e6411179f95fce8fdeebfac8/79406251891.pdf
    • https://mehreganimaging.com/images/upload/files/tovawezazuxowu.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160fa7c3ed338c---3223046434.pdf
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e29c2ee209f---lunarawasiseluwawemejigor.pdf
    • https://vegas-shop.net/uploads/files/96672247601.pdf
    • https://ppkh.net/userfiles/file/goxamed.pdf
    • http://alexhofford.com/temp/files/file/22277730212.pdf
    • https://badoza.net/userfiles/file/73001011381.pdf
    • https://bdcomunicazione.it/file/mumudegoxiwizidafejeres.pdf
    • https://mimpishiosatu.com/contents//files/diwerabixilinokilebod.pdf
    • http://daiichibus.vn/uploads/news_file/penudusogoxupefajesaxu.pdf
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/f2c34f5a01a0cc2fcf1adfb0d25552ff/fajope.pdf
    • http://agataklimowska.pl/userfiles/file/giwiwepa.pdf
    • http://zigzagontwerp.nl/sites/default/files/file/wuvufotasevojir.pdf
    • http://tuanayapim.com/rsm/files/wuwux.pdf
    • http://kpdb.org/userfiles/files/70135974123.pdf
    • https://thefertilizerequipment.com/d/files/buxosugilutejibexo.pdf
    • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/54cf6e7a7c1cc6dc6a94f20ac082f1fd/zetiwoxivu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d64b.bin
5c823339d234a98be3008e8ef79195ce1d580a521a24cb5635e2d9f322b6c2b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD64B 16532 bytes
font_01_sfnt_off0001014c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1014C 16792 bytes
font_02_sfnt_off0001195d.bin
fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1195D 16164 bytes
font_03_sfnt_off00012ed4.bin
dc9a608cb0e2aa5816d8d7ba0f874f584797f0517430984b4a3b0960cdd1bfed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED4 10776 bytes

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