Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ef15f615004e84…

MALICIOUS

PDF

74.7 KB Created: 2020-11-11 18:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fa02dbc8a5b2f8b5ebfe8e4b1e1dd0d6 SHA-1: 9255da30d8011995e6dda153ffc233b97a61d0e0 SHA-256: 02ef15f615004e8450bc6fc8b14eae4e796a23ec4e564fba514afe3f6b9d0224
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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a domain associated with malicious activity. The document body, though partially corrupted, suggests a lure related to 'Amazon interview questions and answers pdf', aligning with phishing tactics.

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://trafficel.ru/strik?utm_term=amazon+interview+questions+and+answers+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f9f7b4c0e69b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_5fa59d4d5782d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418570/normal_5f9a480acc0f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5f9d1a271d8d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5fa2b54d82702.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://uploads.strikinglycdn.com/files/2fd044ac-2e6e-4cb1-a484-c66637f74f05/wildlands_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/72738568940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7041d266-9926-489f-b108-cbf1f3b0ed0f/37081618415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0efe94-fae3-4e01-ac92-897ad9add34b/bawebemewufin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/644fa603-d239-4be1-8ae5-654176c7aa16/21584773703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe9ac54b-7551-44f7-887b-71a4290c9fe2/57868547371.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_off0000da67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA67 5356 bytes
SHA-256: 4ddc0a47c09f75a07defe324afc233c49f7888848b2115df9dbbdde700b82a47
font_01_sfnt_off0000ec93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC93 10348 bytes
SHA-256: 77bb38eab07c3273c5a317d1c44d065bae8333499e8681d1483b64e11cf07da5
font_02_sfnt_off00010fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBB 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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