Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc5056f96e459dc…

MALICIOUS

PDF

85.8 KB Created: 2021-03-25 01:11:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 46097ad08fee779a1ae969c8be203824 SHA-1: dfd92e41c840e826694d0a2af874d2369e1be7eb SHA-256: 2fc5056f96e459dc115066e3cc4f881dd6e23cf1a3d11964027f745ee24bd982
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links, many pointing to disposable domains, and one prominent URL that appears to be a lure disguised as search results. The PDF structure and embedded links suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=carl+sagan+cosmos+episode+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486367/normal_5ffb2e0cf01d9.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/Ageujgc/stack_on_18_gun_safe_accessories.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_605938c429506.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/ghgdh1a/45677083422.pdfIn PDF document text
    • https://cdn.sqhk.co/wanowofimaz/jdlggjr/51643192949.pdfIn PDF document text
    • http://salukapebuke.iblogger.org/la_anemia_en_nios.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/jqAjc8N/absorption_spectrum_photosynthesis_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/demarumiju/hd8hbWz/demorgan_theorem_in_boolean_algebra.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485015/normal_60274ae767745.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455194/normal_5fc98c7e84f91.pdfIn PDF document text
    • https://cdn.sqhk.co/matezafun/aPdhcgj/nesokubiwur.pdfIn PDF document text
    • https://cdn.sqhk.co/povewepalu/P1geP6Q/anonymous_texting_app_promo_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/gufulixofoma/hegdhiY/real_fidget_spinner_io_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/RhdhfRH/attack_on_titan_live_action_eren_titan_form.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nujexaraxeb.epizy.com/16161291409.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/biharwap._in_2018_song.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/61888955516.pdfIn PDF document text
    • http://puwagof.rf.gd/concise_idiosyncratic_gapped_alignment_report_cigar_string.pdfIn PDF document text
    • http://deseruti.rf.gd/obstructive_sleep_apnea_patient_education.pdfIn PDF document text
    • http://wofowixululi.epizy.com/poemas_en_lengua_indgena_y_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/41823934737.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/69853851171.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_off00011074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11074 5428 bytes
SHA-256: 924c17f77b38bb634a3475f2c9751db7865b424f42697ac90131035d3c123dcb
font_01_sfnt_off000122ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122CE 11572 bytes
SHA-256: afbce3fc9ad76f1ce63644473bb0563b8e4416c011c2571e7dfc0aa0aa21a2e7

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