Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44e41175b73a683…

MALICIOUS

PDF

65.4 KB Created: 2020-12-10 14:44:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73df552f8fcf5ba881c640101a63f42f SHA-1: 6410c080243daf7e4d47824139845ad5b0c03ac1 SHA-256: e44e41175b73a68388d4dffaa21532b2a9c0980beb865c131decc2f851b8204b
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://trafffe.ru/123?utm_term=analyze+vs+analyse+vs+analyze', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/123?utm_term=analyze+vs+analyse+vs+analyze
    • https://cdn-cms.f-static.net/uploads/4407747/normal_5faeba5d8c6f7.pdf
    • https://dapinolun.weebly.com/uploads/1/3/4/7/134762022/wulipobexuz.pdf
    • https://static.s123-cdn-static.com/uploads/4421341/normal_5fc614c0232a8.pdf
    • https://murufafutebe.weebly.com/uploads/1/3/4/4/134473477/rupifodugurejap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc4de0ebda9c57a97d7936f/t/5fcd9d3f05ddc9599d3d2a6a/1607310655812/live_price_crude_oil_london.pdf
    • https://s3.amazonaws.com/dujepav/72227010355.pdf
    • https://uploads.strikinglycdn.com/files/87f806cb-8ae1-45e7-bcd3-bfc0983c2e21/popegomeze.pdf
    • https://s3.amazonaws.com/turip/nowilonez.pdf
    • https://s3.amazonaws.com/tetenifeme/kolopo.pdf
    • https://s3.amazonaws.com/bofake/martin_logan_soundbar_manual.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/dusk_and_dawn_guide_osrs.pdf
    • https://static1.squarespace.com/static/5fc0ce8ac6d964583621afbb/t/5fd0503148ae4d1218fde588/1607487539547/fake_girlfriend_call_app.pdf
    • https://s3.amazonaws.com/kofabube/besharam_film_full_movie.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c33d.bin
7423cbb2a71b2d3e5be6f08beb6cce94e3da9944de51cc943039516dde42ba01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC33D 4784 bytes
font_01_sfnt_off0000d3aa.bin
f627bde856a23c72706399de45ec1476a849e120408d6988d1c013285d51e95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AA 11032 bytes

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