Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1402ab2b4f8d732…

MALICIOUS

PDF

63.5 KB Created: 2020-12-18 20:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d91635aad105cbaaa5fc53bd4f127c18 SHA-1: e95ca4f4c6ab71be4969cbe821b3461ed723a77e SHA-256: b1402ab2b4f8d732e9c0bde0ad4b4b27888dde80b43621cad1c939085ebfa483
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates an attempt to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or malware distribution attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=image+mastering+api+win+xp In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426942/normal_5f9c79f5b8e70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422136/normal_5fab1243d33bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5fda2b3f24986.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/penefelomiju/belageddu_song_kannada.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdf08a98f154499f345dbf/t/5fceaf396df3f351a66aa65e/1607380794742/castaways_campground_rates.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/95315701163.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc141a05687f52b6b83892d/t/5fcbc66e11c29807e6e1b231/1607190129858/68490216722.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/88484699676.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52b1cf9866f3fd2efc2ac/t/5fcd3d6f662d5e24e0aeb547/1607286128105/gegubetakesezedu.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/spanish_to_english_translator_voice.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/vujaroku.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/topubulutituxev.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC59 5204 bytes
SHA-256: 7b6c9cc210706c40399add2470a91b38c027ca4f442fd775f797f3a614eda6e7
font_01_sfnt_off0000ce0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0B 10380 bytes
SHA-256: 1b15031ae504cdd1fadc85ed77a8ca6bb1fae9682aa63f6f5cb08f6351db5ca3

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