Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4591820c9b47ab9…

MALICIOUS

PDF

72.7 KB Created: 2021-02-19 13:09:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6deac57ea4760bd6f6451647d659aa0c SHA-1: a4ff9a20343b1a53909f976c19d823675a38bb35 SHA-256: e4591820c9b47ab907f5ee4169f30b57b00a9872977324559b7dfcdaa6808399
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://yafferge.ru/123?utm_term=ncees+fe+mechanical+practice+exam+pdf+free In PDF document text
    • http://mbfsopg.com/83998153515jz1fy.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/0Ojjxjd/dogarozunenewif.pdfIn PDF document text
    • http://copyrighthelpcentral.com/derniere_danse_free_sheet_musicxzto1.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/2ggjdgh/vesoja.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzagile/e6RCkhc/messages_for_web_qr_code_not_showing_up.pdfIn PDF document text
    • http://reflectionss.space/ben_coloring_10_hero_aliens_vs_robotsssx9s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420459/normal_5ff13d86e95f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411937/normal_5fdbc3ac0b324.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413454/normal_5ff168767a995.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475564/normal_6004d27b1e6c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_601ca6f60a8eb.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/3hch4cC/bypass_passcode_lock_on_iphone_6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fexajorijoworas.epizy.com/autotune_5_dll_free.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_off0000de0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0E 5432 bytes
SHA-256: ab8ef69909eb93cc17b2d0eb00620c4083c4d43821266f654fe79ad022f140d3
font_01_sfnt_off0000f067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF067 11156 bytes
SHA-256: 49fc8138c5d13069fe19dbd097110bd9caada4d4c21889082071c6424d26417b

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