Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0181dd89ed523f…

MALICIOUS

PDF

61.6 KB Created: 2020-12-21 23:19:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b85aab5de2674d9c9e99fff3b915e33d SHA-1: bd788b792c111fa6adb7915c4d30f92b6c6787ce SHA-256: 7e0181dd89ed523ff67493e07f40b53f42db4e61364c6158aade328b04806d34
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, when clicked, leads to a suspicious domain. The document body, though heavily obfuscated, suggests a login lure, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=student+square+ggusd+login PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448331/normal_5fbbb52d11574.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/palanutopirowigupis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454807/normal_5fd83e68d75f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387816/normal_5fce4660b8850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459036/normal_5fab2d08afb54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489732/normal_5fd9954e86600.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/gametuzumax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wonoti/gusefobumitefexe.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/20113303610.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/free_template_powerpoint_brochure.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7235687f52b6b817f64/t/5fc30874e6d49a06bbf7158f/1606617205118/97511591826.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/food_inc_questions_and_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc108971c8c7413143284ac/t/5fc4cc919b1ed035387415b3/1606732948608/seamless_subway_tile_texture.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/husqvarna_automower_430x_bedienungsanleitung.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11355ab79f442f22aa123/t/5fc2c448f81c9a2a0cfd88fb/1606599753500/root_kingo_apk.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_off0000b4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F5 5220 bytes
SHA-256: d7d512a0f972875b4c702f94c1c9f3e4b907d7a926fea802eacfd3ebb9da7916
font_01_sfnt_off0000c6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B5 10068 bytes
SHA-256: 5ae35a33785a4f327d3b15a0d3132c0b56e60cebe8916ba963772e3ba5213609

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