Malicious PDF — malware analysis report

Static analysis result for SHA-256 322fbf59a5d8a43f…

MALICIOUS

PDF

87.8 KB Created: 2021-03-23 00:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 36c21e28f24c8fc205489d1426ea4fa3 SHA-1: 2f311386695d76caece11782089c7409ea6f87bf SHA-256: 322fbf59a5d8a43f0de406970b663a502f832d51462305020fc150c4fb6aeb96
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable hosting and link farms, a common tactic for phishing and malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were extracted, the PDF structure and URL patterns suggest it's designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/award?keyword=canon+pixma+ip7220+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384461/normal_60047c0f8e96b.pdfIn PDF document text
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/penedudujewamuxa.pdfIn PDF document text
    • http://creditreportfast.info/kusupapewitunojucwpyv.pdfIn PDF document text
    • https://givurili.weebly.com/uploads/1/3/4/6/134605008/7c856af36ba5d.pdfIn PDF document text
    • http://wirelessinfo.ru/43455527146qzx41.pdfIn PDF document text
    • https://zirotowaze.weebly.com/uploads/1/3/1/0/131070424/rupudinot-wamurogok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466364/normal_6018dcb23fec8.pdfIn PDF document text
    • https://ruwixotuso.weebly.com/uploads/1/3/4/1/134131383/4078630.pdfIn PDF document text
    • https://lekolusogi.weebly.com/uploads/1/3/4/3/134365603/59ba5.pdfIn PDF document text
    • http://dutov.org/abraham_maslow_self_actualizationur54k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_6048a3d833531.pdfIn PDF document text
    • http://pycnidwzxc.info/9183056803a5ksy.pdfIn PDF document text
    • http://d-youtube.com/jazujetodilumr95s.pdfIn PDF document text
    • http://remont-kvartir-otzyvy.moscow/92479328139qhc8w.pdfIn PDF document text
    • http://cozyplacefor.rest/bibonosibamirabuturugouvnp7.pdfIn PDF document text
    • http://nerroba.info/57125560586xx0b6.pdfIn PDF document text
    • http://ig-support-service.com/nuritukf21hd.pdfIn PDF document text
    • http://byseles.xyz/sigasaziwululigateromibbifin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_5fd1bc75e89fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472753/normal_5feb51ecec410.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377678/normal_5ffe1d8b35aea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482882/normal_60273391cf8ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • 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://scripts.sil.org/OFLIn 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_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 5040 bytes
SHA-256: f63e82b19a750febf315c7a388d6bce8a17330f7d7092439b08c1bf2ed41680c
font_01_sfnt_off00010883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10883 10840 bytes
SHA-256: ef7ab8a941439ff07329b64a4a0942653962a18a5f3592406860239e2ad5285d
font_02_sfnt_off00012d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D61 16348 bytes
SHA-256: 2334ade245ec46eaa3943be3e15553e8ac07f98e23f092e9c17c46eab61462e4
font_03_sfnt_off00014339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14339 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3