Malicious PDF — malware analysis report

Static analysis result for SHA-256 060cd3f333fbf80e…

MALICIOUS

PDF

80.1 KB Created: 2021-07-23 03:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 95478146ceb71f51c55a002ad71b9dc3 SHA-1: 98c2da04e443ac6c6fe3625ad8ba74dd28d3ab3b SHA-256: 060cd3f333fbf80ecd2593f8d3d45e544e21757ac1f340998d708a63d2b73481
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://abwfinlay.com/uploads/files/dorilutefosixojikupufovi.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4017afcab---51590990357.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7291f2dd9---menimolulani.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/dd8002d913cb1d993154e72b5966e626/negimili.pdf
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/a50a85f819cc9038db21fae54805dc46/vewit.pdf
    • https://webmenuplus.com/images/file/jowuwinuxovewopigubu.pdf
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16076cf2694bdc---jumusixiwobanasubu.pdf
    • http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/pugopijukovezarixogeriwe.pdf
    • http://renovfab-menuiserie.com/userfiles/file/99393464289.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073193e77e04---kabegexupid.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/v5tkkv1eb3f7rtjt8ovgeinkr0/tokorekazidi.pdf
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/e6b883d28a2c81a3ab9d898eee1a9748/54265496065.pdf
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/5vf5nnr7h1ohnbasbejj80aum0/55882311469.pdf
    • http://staropolski.net/Upload/file/xegesafabevimefur.pdf
    • http://lmyc.net/clients/875386/File/76183688110.pdf
    • http://shethof.ch/cgi-bin/dynamisch/file/99764488562.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16081c4693881c---39752201144.pdf
    • http://colorfulmedia.de/fotki/fotki/file/vemuwepadeba.pdf
    • https://kemxoi.vn/app/webroot/files/images/pages/files/todigoxom.pdf
    • http://cafesezony.ru/fck_editor_files/files/97745760082.pdf
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/14049802339.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=knitting+needles+size+11+in+mm
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d89f.bin
947f8d0104889cac2fdc681bea324cffcea7b0006f8d7799d9f312be3f7db5ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xD89F 16708 bytes
font_01_sfnt_off00010411.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10411 16792 bytes
font_02_sfnt_off00011c28.bin
2e69952c666992503a9072ee15ebd636f128ad5633e6cca441b1413c505ec062
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C28 10312 bytes