Malicious PDF — malware analysis report

Static analysis result for SHA-256 229067fe559ea8b4…

MALICIOUS

PDF

77.6 KB Created: 2021-09-05 13:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 9055d2ed4e52743acc75ad09dfbe2d5a SHA-1: f90eeceac414bea6317e1ca01d1b2d7436e925db SHA-256: 229067fe559ea8b44c2be473e9105fae333f35f04901e37bbbe0fbd083f4c167
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and flagged by an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, with numerous embedded URLs pointing to potentially compromised websites or disposable hosting. These links are likely intended to lure users to phishing sites or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5190

Heuristics 5

  • 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
  • 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://esvigo.com/upload/files/99693543759.pdf In PDF document text
    • http://raegcafe.com/uploads/files/gademisawabub.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/43121590143.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c518aafd---lamaxagixamumavupajoxanu.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/43534f70d12c70618546a50672561360/zenizejoruwuwelakenot.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/95836327628.pdfIn PDF document text
    • https://nenmongdangquang.com/upload/files/nekufapademotegavib.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c736034b---jiloxerolu.pdfIn PDF document text
    • http://atel-j.nl/uploads/files/67350522898.pdfIn PDF document text
    • http://arkystudio.eu/userfiles/files/73588187126.pdfIn PDF document text
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/jilosedesivowafiv.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/2acb187e516c47a1f62cf913bf26fb5b/jelepana.pdfIn PDF document text
    • https://newoptic.mn/uploads/files/9406540633.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/salarelitunuzed.pdfIn PDF document text
    • http://jinwoosmc.com/userfiles/file/6911896609.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/ebd0094e3ba7ce523a877c8a44da4358/rabisutolusirol.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/1ea2f375905e10b496ea7fb704a61987/47024697247.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e09190ad3b---4802138531.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131bad9e4d00---tanuxabefi.pdfIn PDF document text
    • http://lignumweb.com/site/webroot/uploads/files/mofevorubodebeluxuvawixa.pdfIn PDF document text
    • https://hawkseyetravels.com/assets/ckfinder/userfiles/files/29994338340.pdfIn PDF document text
    • http://thaoduocquyhiem.com/userfiles/image/file/13125979253.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=candela+gentleyag+service+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64D 22668 bytes
SHA-256: ee897d06191f0794589820d42a37044804d0155a28a05434c85b05de79017f9a
font_01_sfnt_off0001105a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1105A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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