Malicious PDF — malware analysis report

Static analysis result for SHA-256 399702cc18605428…

MALICIOUS

PDF

169.5 KB Created: 2021-01-30 09:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 19d9af51023503e744f37ae981987ec9 SHA-1: 806234fd1d44c8210864597b3105cfdead0251a4 SHA-256: 399702cc186054282fc4e625a4c268addc817b78f2a54222c0db2e312f42aab1
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits high-risk characteristics, including ML classification flagging it as malicious and ClamAV detection as a phishing trojan. It employs social engineering tactics by presenting an urgency lure and a browser extension installation lure. The embedded URL points to a suspicious domain, likely serving as a malicious payload or phishing page.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffset.ru/wb?keyword=top%20down%20racer%202d PDF link annotation
    • https://cdn.sqhk.co/bokirebi/wiaxhhg/train_simulator_route_building_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/dijgfii/siren_sounds_fire_truck.pdfIn PDF document text
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/terapidaraki.pdfIn PDF document text
    • https://jitebogegamoma.weebly.com/uploads/1/3/4/7/134761197/zevidaxutapuweworoma.pdfIn PDF document text
    • http://filanion.online/convertir_en_odtzm080.pdfIn PDF document text
    • https://vosuzupitozom.weebly.com/uploads/1/3/5/3/135313705/gakuk_tiwavurel.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/doxifuba/15303521599.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/what_are_you_doing_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/13497262065.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/fetegixabipote.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/best_emotional_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/lisofixojonokekofuwamexi.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/wofatub.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/zikuruguginex.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/attentiveness_character_first.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_off000260a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x260A6 5028 bytes
SHA-256: bb30501e6b6c05bb419fc40fb4bf271d079d85b22bf9c44eb77f1afbba8fefbd
font_01_sfnt_off000271e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x271E2 11440 bytes
SHA-256: 2932609541406724e0745e3f296695b3bdbaa495e69dd4edce4be5ed18f8af2e

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