Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cb792014b3efac…

MALICIOUS

PDF

85.9 KB Created: 2021-06-27 06:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 752a7caf3bda4650b1d3aa5997dbeb2b SHA-1: e8ce998babd7de907b2a2ae9a7e1266d75b27f95 SHA-256: 80cb792014b3efac66f9c18f27924bdfcf63ba65af10e36583db854f108e2bd2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing numerous links to external websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b9b8128a1---bopeselodobebijese.pdf
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606e1014232e7---74211142519.pdf
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079fd8862c08---dokurizizozes.pdf
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd266cc4af---kerepidotufefa.pdf
    • https://kvkumariajnkvv.org/singhania/downloads/file/sijitetumuneminalun.pdf
    • https://decoveinvestment.com/userfiles/file/larinukuwofejosapizotajux.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/a0d8d92873a8292f80277dbd4838cd9a/15579956281.pdf
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160814e7d949cb---60454340208.pdf
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/9d42e3402d4b077430519c3e23520d00/32582927659.pdf
    • http://beta-rc.com/upload/files/20805785402.pdf
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/9604c2dccf25c135f1134593ff8158cf/82151890030.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a7d4c5c2a---85268482136.pdf
    • http://halaljones.com/uploads/files/85423621261.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/6118f86afbb6aa09ae7817f7469b9b25/pogol.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16082d1b5ddb78---6318869260.pdf
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082676baf2d4---foxajorup.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1776130640---20889513374.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//porokigajemumisa.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6b3c464a6---vifilinuwolexata.pdf
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b1974bd9a41---48158397308.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/0ee12baf2344bc5bff1390eee9d55a3b/20346865857.pdf
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/5e27d215b59a89bf3e5e95b90737ae6c/jewek.pdf
    • http://1-cx.com/ckfinder/userfiles/files/24052530618.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=mini+schnoodle+puppies
    • 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_off0000ed42.bin
3afc9cd65e057328ab542e5868095cdaeb192654593ecdc4e8d10e295bddc0d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xED42 17676 bytes
font_01_sfnt_off00011b49.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B49 16792 bytes
font_02_sfnt_off00013360.bin
9eb111e03470750a1a1c61355219282e4fc5733e3d975d1a7de10ba65e3b5baa
pdf-font-stream PDF embedded font (sfnt) at offset 0x13360 10344 bytes