Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a5e1636b5c7c79…

MALICIOUS

PDF

65.8 KB Created: 2020-12-17 08:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0b728f217b7c72d4d0b31fd6d1bfeb0e SHA-1: ebc9685625a984e724f8c2cb37facc2c97b39faa SHA-256: f2a5e1636b5c7c79d1c383ffe10a075ea7bbed635a1a2f82ca36084482c80eec
96 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 by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL that leads to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a vehicle owner's manual.

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/strik?utm_term=2012+scion+xb+owners+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448556/normal_5fa398049a300.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385012/normal_5fca8172b7c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f883d3540e10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406454/normal_5fd6a727a8cce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450733/normal_5fae86a8424ee.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/6a2dcdab-58b1-45af-9e40-fa9b7b1f7a36/bernat_blanket_yarn_patterns_crochet_shawl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b88fdb-1ea4-4d43-a3ff-0fb1ab7f5fc9/tablet_weaving_patterns.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/sabubetimiku.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c2a59ea50d41209cf461/t/5fcdcade6f0099009e849590/1607322337854/66025591096.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fc112339b1ed03538018968/1606488627797/hadith_en_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5304c2-12a3-4304-8b15-b9351331645e/gong_xi_fa_cai_meaning_in_nepali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a422adf-2578-4829-bba8-faeb7df98669/14554958014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8339eb27-7ff0-477c-9497-22b717bf6f56/indian_heavy_metal_bands.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/alien_breed_trilogy_trophy_guide.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_off0000c3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FF 5476 bytes
SHA-256: ea566e9e00c3997ef33e1b2d3f62a8683d93ae79a56a6e52a7ab635d100a96d1
font_01_sfnt_off0000d699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD699 10652 bytes
SHA-256: 79781bb2b452d1fba1b38b4a37edb95c0689c55679c9d386e47242d059b97962

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