Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c80fe8720800c1d…

MALICIOUS

PDF

88.2 KB Created: 2021-08-12 21:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: fd8a8ccf883823623698b214052b31d4 SHA-1: 46b425cec24a0914a155c55d27763edd94c85664 SHA-256: 1c80fe8720800c1debc6ad8a7adb6ddf4a859626361781d2a91a73472be7d597
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the nature of the URLs point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/7cafbaff6e7bb70dca5ba9fd7f4b5d02/mipotigabiwugazubev.pdf In PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/e3bd0cb784dce8366120905a850bb688/50528385769.pdfIn PDF document text
    • http://proreferee.ru/uploads/ckfinder/files/51362500742.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071dcd88f319---45714548700.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e3d7f41ecf0---neguruzofugoxibu.pdfIn PDF document text
    • http://dansensvenner.dk/imagesfile///56367072916.pdfIn PDF document text
    • http://southwest66reunion.com/clients/f/f6/f6f8b7bd17d60304c359e527a2c43449/File/92089700699.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/62120536684.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6ula72mrg024gbt2qg6u1co5q5/wewademuraralepajapami.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/fdc8c9b59c576504e5eed831520d36c4/fizetojoforifataf.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a184dbd9161---wovominepuk.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606c8182555ef---27438524915.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/15dbf60ee1306710f2b79e4471d7faef/55437889672.pdfIn PDF document text
    • https://www.xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/fesirikobadugizejorin.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/14ggvd3ab5rbd7th0m7s8v80f2/budavikuvanafekumerolebo.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/8bb216f5d376367cb7bb63104d2469c4/digalojaxixam.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/c1upcuf55ob61s90gghtu2u7qo/welowosexonuxerotuvodifud.pdfIn PDF document text
    • http://edsmithestate.com/clients/8/8f/8fcea3baa00381bb68ca4dcda22eb4c7/File/desubot.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160918bc70a3b8---xufatogukuxixamu.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/belalusibiwimowajelekef.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/031804385222.pdfIn PDF document text
    • https://dubaimotorcycletours.com/uploaded_images/files/2264846892.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=descargar+cuando+levanto+mis+manos+samuel+hernandezPDF 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_off0000d9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EA 17556 bytes
SHA-256: 14368956eb6cfa5d553ae688bd9f7fad967bff7098168835a1ef093a94986ff2
font_01_sfnt_off00010682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10682 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E93 17004 bytes
SHA-256: 1d6a7c9b1d4d910ef2546efc64e1e13bdf32658182e4648c55faf23d02ed6acb
font_03_sfnt_off00013645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13645 11044 bytes
SHA-256: 036e54ce6b629c19e7a4abd46d9955a4136fea3aff693a81359fce16ec3da2eb

Open this report in the interactive analyzer, or submit your own file for analysis.