Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfd1ee370634447…

MALICIOUS

PDF

69.7 KB Created: 2020-12-28 13:16:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 89033e0e85ccc0b076d7cdbd2ca9dde3 SHA-1: 19efd864e334fb9db956471bc6624b45c35dee8f SHA-256: 9bfd1ee370634447959a15325bbd1472327a2ae0b643b6195c998ba54a40515b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it uses a social engineering lure to trick users into installing a browser extension or plugin. While no scripts were directly extracted, the presence of external URLs suggests a potential download or redirection to a malicious payload. The document body is heavily corrupted, preventing a detailed analysis of its content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://traffine.ru/strik?utm_term=qr+scanner+samsung+s7 PDF link annotation
    • https://cdn.sqhk.co/salenasova/hihjhjc/assassin_s_creed_identity_free_apk_and_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/lokalofobox/rqejgjc/horse_running_really_fast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444626/normal_5fa0023f11c63.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/SribKji/60018291858.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/Lhege80/horse_academy_island_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zipuzedozame/hiKhcid/russian_cars_priorik_2_mod_apk.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/xenavuxa/dofifad.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/ranuzozuporajaref.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/where_do_tables_and_graphs_go_in_apa_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0049c82b-dfdf-4231-a0e4-8cab0f32694b/guzabinidazagiwot.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/best_apple_watch_screen_protector.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/valley_of_flowers_images.pdfIn PDF document text
    • https://forums.androidcentral.com/showthread.php?t=776323&s=067020ca90da35e744438a0eaf5db585In 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
    • https://forums.androidcentral.com/showthread.php?t=776323&s=067020ca90da35e744438a0eaf5db585In 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_off0000d3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E1 5228 bytes
SHA-256: 68a0eb40528341536175a155d0694b143437c3f98591d76b835f1f852e78cfa3
font_01_sfnt_off0000e59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59F 10872 bytes
SHA-256: e220d8113ff51cc63931357453d8f72b49930c833cac133955a61ef0c86aa9d7

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