Malicious PDF — malware analysis report

Static analysis result for SHA-256 108905316447d0f1…

MALICIOUS

PDF

68.4 KB Created: 2021-02-02 11:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d2fcb43cb2eee5f5ac2e863b93409092 SHA-1: d6bf5827c422cbf0c45594f7730a6a23484a84a5 SHA-256: 108905316447d0f1abda33d8983f36486b79f4b38c2ab58dc990027febcabd33
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a critical heuristic and an ML classifier, and ClamAV detected it as a phishing trojan. It contains an embedded URL that redirects to a known malicious domain, indicating an attempt to lure users to a harmful site. The PDF structure and embedded content suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=find+book+pdfs+online+free In PDF document text
    • https://zopokirupinurow.weebly.com/uploads/1/3/1/3/131381130/9678178.pdfIn PDF document text
    • http://bilokeg.iblogger.org/mechanical_engineering_mini_projects.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417025/normal_600cf3cf58796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sudimomovaw.epizy.com/rogetotulikoloxim.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/wegixavol.pdfIn PDF document text
    • http://vokunewegulu.epizy.com/ararara_marathi_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/puxalobozoriditumur.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/17427483668.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/mom_calling_ringtone_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/11742959470.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/80949441398.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/16653818265.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD138 4984 bytes
SHA-256: 19276ed6d58b8e75c973eff57d36df8243b3e5224bd60a5e9a044734a91d3530
font_01_sfnt_off0000e23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23C 10312 bytes
SHA-256: ef92ceb33a018ee1ea94cdc005fbf02abef2a0cc8839f596c9fa4c1e4ce2c490

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