Malicious PDF — malware analysis report

Static analysis result for SHA-256 8621156757df8a9a…

MALICIOUS

PDF

79.8 KB Created: 2021-01-26 13:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7e387daaaad371807a03edd4210d4ad9 SHA-1: 27cff751031ca5bca6902ea328eda5efa779e947 SHA-256: 8621156757df8a9a0317133e982e4589c38dbc8f9160675564363a1e0e58d3c8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafftec.ru/123?utm_term=santa+maria+in+trastevere', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure itself does not contain readable content, but the presence of external URIs and the overall detection suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=santa+maria+in+trastevere PDF link annotation
    • https://cdn.sqhk.co/gotakavapu/giijdoO/vogukarizinabejuzixo.pdfIn PDF document text
    • https://cdn.sqhk.co/zewesifadeka/Yrhjchg/pekoku.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/hcxgjBo/genez.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/igjjayo/54634120838.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/exLiahd/70465622633.pdfIn PDF document text
    • https://cdn.sqhk.co/novozefox/gjcidha/makadagijurolewuv.pdfIn PDF document text
    • https://cdn.sqhk.co/zadorari/hdWyaic/92798874377.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/e6mjbid/sec_14_market_faridabad.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/FiUjaBB/28004791973.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/jeehhaz/black_friday_2020_apple_watch_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/vx7NicM/jezoju.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/pajeriramal/char_broil_big_easy_cooking_guide.pdfIn PDF document text
    • http://zovewopot.epizy.com/vert_shock_maintenance_program.pdfIn PDF document text
    • http://nabepazefesuju.epizy.com/winulovokovikiw.pdfIn PDF document text
    • http://sufekowanak.rf.gd/mailer_design_templates_free.pdfIn PDF document text
    • http://fawipiro.rf.gd/performance_appraisal_form_sample_answers.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_off0000fabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABE 4960 bytes
SHA-256: e76a55d32f4e9e2d58b121237d9b3bf7f085a7651da8a2d029c6640beccb7421
font_01_sfnt_off00010b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B86 11996 bytes
SHA-256: abf328310f4fb4fc0650681ec15e63e9ac2239b4788d1fcd814a9d8c3913c8e0