Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc94bb81313452b…

MALICIOUS

PDF

62.7 KB Created: 2020-12-02 18:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4065ffd679d10c5bc25d90583684ff7e SHA-1: d750018dfe91f839d9f4da4cc962e76f5ba23ff1 SHA-256: 9fc94bb81313452b3af7084d38232b1a6263f2497d38933ca329cfa834ebe86f
154 Risk Score

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 'https://cctraff.ru/123?utm_term=gear+s3+frontier+bands+ebay'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/123?utm_term=gear+s3+frontier+bands+ebay In PDF document text
    • https://static.s123-cdn-static.com/uploads/4444636/normal_5fc4079a2d076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467005/normal_5fbeee6f04171.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463792/normal_5fb3d39560cd2.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/ruzumeb/antenna_theory_kraus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65581a13a450bab197ba5/t/5fc793967995075abde8c631/1606914966185/botuvuki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e155104edf1d7780ac3e/t/5fc2510b61e25426e1838845/1606570252180/28922249730.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4086b97992eb55bb7f9/t/5fc5d1cecb3e0f577119b712/1606799828439/lidapu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5dcbf16f6d44b07e099ec/t/5fc6e7460623334b0c50f82a/1606870854436/videos_like_de_amor_para_whatsapp.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f3af1c8c741314320bf8/t/5fc1c66c2dd96f591830b5f8/1606534769832/running_record_accuracy_rate_calculator.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe16492dd96f5918b66762/1606293065393/65123547959.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf43468bfc5186166fabe/1606218804988/ticket_stub_diary_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc2a9f564571256549377c1/1606593013427/escuela_dominical_2020.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_off0000ae0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0C 5096 bytes
SHA-256: ae6011ee44020f1e8868930d7427bbd0a85df8c3e25438d85840ba6e7e65187d
font_01_sfnt_off0000bf70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF70 9560 bytes
SHA-256: 350ce1df97eeb281f8caa4369fdce54860a05d29c5ff6ce54cf6862fcddb5412
font_02_sfnt_off0000e01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.