Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e289c2b7403ed4…

MALICIOUS

PDF

71.0 KB Created: 2020-12-19 12:18:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 04a376538d73afaf9c556577cc915691 SHA-1: 9361d7e98ae16f799a5a7f3c115637e3cdde848b SHA-256: d2e289c2b7403ed4c755662c0ace14229da01facfc76acdb0730da3cac890ac0
96 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 ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffi.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to Excel file manipulation, which is a common tactic for phishing campaigns.

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
  • 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=merge+excel+files+in+one+sheet PDF link annotation
    • https://gitufigekuxos.weebly.com/uploads/1/3/4/6/134634758/5868449.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/tisujekivekuv.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/3200349.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/kanakib-melifimat-dezemipulavu-mazodovifidewe.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdd52f507af9e0e16f5551b/t/5fdd724fef8e407a9e7bb65f/1608348240046/frequency_adverbs_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a4ef956-d551-47d5-861b-3a1856e26e26/towabesesoxa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc368e8c6229360ecbce8a9/t/5fd607995488895576a18dac/1607862169978/beutler_smart_vent_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a75e39-4bd7-401d-a6b1-ef29b1f56c53/infinite_baffle_subwoofer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03ff5601-d873-4b6a-93a6-2b6b62fe77a1/roxunorebodavezitazev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5df9fa04221c7117d001/1606376955978/21203154510.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfeb102bbd74065800e14d/t/5fc264934f983757202d15a4/1606575252873/lotasomudofem.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_off0000da8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8F 5008 bytes
SHA-256: ef729394171fb04b2a7648e4b7d605b3fafa9742a40f465ddbc75fd96f8808d9
font_01_sfnt_off0000ebae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAE 10612 bytes
SHA-256: cd1b0d7df2589a402ba36ceb9e2b01ef6a1bf12e1b45afc0eed6f65b0dd499e1

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