Malicious PDF — malware analysis report

Static analysis result for SHA-256 44945eaf344b0e79…

MALICIOUS

PDF

80.3 KB Created: 2020-12-30 02:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0869acd801993f5f9179d8eb722d2de4 SHA-1: b51860bae526035f81023cea7217c9f4904ed2e4 SHA-256: 44945eaf344b0e7966403046a7eadedcd0e52f12413b959309127d08c3a0b582
164 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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffine.ru' which is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting an attempt to manipulate search engine results or distribute content, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://traffine.ru/123?utm_term=personal+statement+title+format PDF link annotation
    • https://vepimogarib.weebly.com/uploads/1/3/4/8/134856589/ca69288bc.pdfIn PDF document text
    • https://wenezobu.weebly.com/uploads/1/3/4/6/134625155/1720325.pdfIn PDF document text
    • https://zozopagutuduxiz.weebly.com/uploads/1/3/4/6/134669393/funezewodibaditado.pdfIn PDF document text
    • https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/5f23f52f.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/gLig4xd/6524706448.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa4c809-1247-465e-89b0-b9bcffa7df0f/87285120565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc707a2-04ff-4fdc-b40a-560f3b79d7a6/91918586120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9a3c47-3238-49c0-9fcd-bf1fdc171153/psychology_of_success_denis_waitley_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6103b902-3042-4d59-ae4c-bc08c4e1f356/24241757339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e318ee65-f1b4-4704-8101-2ab5d3d3d177/super_stickman_hero_fight_mod_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/que_significa_nfpa.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/59576558719.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/speech_on_kashmir_in_urdu.pdfIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD3 4916 bytes
SHA-256: ea21b02e16d6723828989c2fec849c1d47603306d4a7479c4e91d5cb3bf2bb51
font_01_sfnt_off00011071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11071 10508 bytes
SHA-256: 4bd60d9e64da0db362a24bc67b3d1f4b494fc75ebaca1f3d0c3a0eaf42b0a347

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