Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4c967571b6201f…

MALICIOUS

PDF

73.0 KB Created: 2020-11-21 23:56:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 683792f99edac309e36b13b070e6e254 SHA-1: 1561a77f5a9d88be4bd6707f18ebb7027da7c181 SHA-256: fa4c967571b6201f6f887fb75a688d026d73f338b314f064bebe8d4f506530b0
96 Risk Score

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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to consumer reports and appliances, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/aws?utm_term=consumers+report+appliances PDF link annotation
    • https://bulipabuwalo.weebly.com/uploads/1/3/4/1/134131868/8723317.pdfIn PDF document text
    • https://nizowidupisex.weebly.com/uploads/1/3/4/5/134502208/9cf4f9a3.pdfIn PDF document text
    • https://wujibinofowe.weebly.com/uploads/1/3/1/3/131383737/6108684.pdfIn PDF document text
    • https://sakixuso.weebly.com/uploads/1/3/4/4/134488330/nabiduwifuxig.pdfIn PDF document text
    • https://xerutofen.weebly.com/uploads/1/3/4/5/134578778/b75de8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tuzakifezara/lawise.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/binomial_expansion_problems_and_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/forester_lift_kit_adf.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/ralenimozu.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/the_lady_from_the_sea_1974.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/pipujimitozusasa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD411 4984 bytes
SHA-256: db9a03b7161f73471bddfe13a2dd54333dec7c5c1aee80091af2ed8a169f15d0
font_01_sfnt_off0000e4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E3 10668 bytes
SHA-256: 185e2cb6ac7a2e1c67d1f2b927965f8c8090a1483c9332b35da7ed236804338e
font_02_sfnt_off0001095f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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