Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6491a1eab03c4a…

MALICIOUS

PDF

70.2 KB Created: 2021-01-12 15:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 75f40f6eda309f75bf230da1d779abb2 SHA-1: 9ae9c24dd7c9d1008dcffef2b4f26c4eb57d9423 SHA-256: 6c6491a1eab03c4af7041afa8f931746bc9d5ff8223b32ecdb805caef56d88bc
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of embedded external links, indicating a link farm or phishing attempt. The presence of these links suggests the document's primary purpose is to redirect users to potentially malicious websites, likely for credential harvesting or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/aws?utm_term=mickey%2527+s+malt+liquor+bottle+cap+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408346/normal_5ff165452a7a4.pdfIn PDF document text
    • https://cdn.sqhk.co/mokavokaven/jjicuid/mokotugi.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/kugaviz.pdfIn PDF document text
    • https://site-1175681.mozfiles.com/files/1175681/maluvivu.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/3kGibhi/18994424642.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476015/normal_5ff771a313e3e.pdfIn PDF document text
    • https://pedomolakikivo.weebly.com/uploads/1/3/4/4/134440841/4648700.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/hdPzhdV/idle_zombies_mod_apk_free_shopping.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379485/normal_5fcad5b3bd5a3.pdfIn PDF document text
    • https://wuxinaruniluxod.weebly.com/uploads/1/3/4/8/134882591/911534.pdfIn PDF document text
    • https://site-1171458.mozfiles.com/files/1171458/98330623693.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/gjMEHja/colour_photo_editor_app_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD339 5640 bytes
SHA-256: 36e962c41ad0475e7cded70d8ec5040ee75a13e591d1cdebf621fb66f86424fc
font_01_sfnt_off0000e680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 10972 bytes
SHA-256: 9b84b71e032cba6f7c7a9f24eccc1e1d6af85fe9d96d1d1f3f39cf5894a4cfcc

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