Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e89409af209806…

MALICIOUS

PDF

93.1 KB Created: 2021-08-04 20:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 96e1ceeadfac2f5a56e3da898d758f36 SHA-1: 9c693d1a49c705f239eb917d4bb339f56f305e04 SHA-256: 60e89409af209806c9ae77c2cabc1e8252390d1642c769ce2bc4c5822452f20e
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, indicating a phishing or SEO manipulation scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to exploiting vulnerabilities or delivering further payloads. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/c204b4803f2d2e1107bad199b5102206/marafa.pdf In PDF document text
    • http://elmbbq.com/uploads/files/67611724841.pdfIn PDF document text
    • http://www.moyekolodin.com/files/69127995591.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd75990e6c---setifovu.pdfIn PDF document text
    • http://fecoil.com/userfiles/file/jewuwes.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/gbhfnfl15u845lnd2po167k3rv/99635215667.pdfIn PDF document text
    • http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/piwexepuvuvu.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e780b438132b5a61685c7b78bf5a58cd/1087042180.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/eb2i4af0j2rm1p2gl0jl9jua46/75571539507.pdfIn PDF document text
    • https://ikuseikyokai.jp/ckmedia//files/potefasoleviwewaru.pdfIn PDF document text
    • https://jdlpartnerss.com/userfiles/file/3295773296.pdfIn PDF document text
    • http://aloeverajuice.cz/files/file/50332003934.pdfIn PDF document text
    • http://zatacorp.com/upload/files/42290638711.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076cfda95107---6124700267.pdfIn PDF document text
    • http://ros.by/ckfinder/userfiles/files/30667619550.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/e52168735faa49dca54a0ba37a38c19c/nepaxanuledujokew.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16074dbb5b07c8---poxaziredosafagoxox.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/zakepazi.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1609aaed71d627---41356309264.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/86431968742.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c064f86bfd---46849162105.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/79f0bbc80365af53ec90ff960e0b9c13/65740677279.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/a6508ba7f6e9ea933ea6fb77b5818f51/fuzavufori.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ffc2c843f---nixolobe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=carpenter%27s+blocks+mod+para+minecraft+1.12+2PDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF1 17092 bytes
SHA-256: 2c7f3cffd4533fe936cbddee7f8cad65f966763f67459a7b216d0441c2172584
font_01_sfnt_off00011bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000133d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133D8 11316 bytes
SHA-256: 40ceff3878599675462b5cd32dd946cb46bb6ba3d41358ff7e454e484f914f78
font_03_sfnt_off00014e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E57 16064 bytes
SHA-256: a013ce2342554bbd70a9f85285a6053b67e9b25eaba0dd22223cc179b1b1ea16

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