Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43816511f045767…

MALICIOUS

PDF

64.8 KB Created: 2020-12-23 16:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f35b9e77988f3e961585fe1247804f87 SHA-1: 65a519a5589ac54aa10faeb6385ac13c89269a78 SHA-256: a43816511f0457674ebd5a2f9ae1e07c2e158b0d12b451dec64054c695b2954c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains text related to 'Kobe vs lebron james', likely intended to trick the user into clicking the malicious link. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=kobe+vs+lebron+james
    • https://cdn.sqhk.co/sofaxuleruri/jj9qjal/survival_craft_apk_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4413345/normal_5fa8677e4b0e1.pdf
    • https://cdn.sqhk.co/wemegofuk/DDruiax/slither._io_immortal_snake_hack_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sedimeraxufi/tratamiento_para_la_anemia_aplasica.pdf
    • https://uploads.strikinglycdn.com/files/f8322cd4-dd36-46d8-8019-44d761646270/blank_volleyball_court_rotation_sheets.pdf
    • https://s3.amazonaws.com/kukupunopedon/75052243683.pdf
    • https://s3.amazonaws.com/farowug/best_buy_phone_interview_questions_and_answers.pdf
    • https://s3.amazonaws.com/nedijowewoded/po_box_address_format_example.pdf
    • https://s3.amazonaws.com/tazibabebamep/settings_in_to_kill_a_mockingbird.pdf
    • https://s3.amazonaws.com/xabalaru/sapikaxozuxuxokovusabef.pdf
    • https://s3.amazonaws.com/leteraxewe/scb_annual_report.pdf
    • https://s3.amazonaws.com/nokiva/formation_d_aide_familiale_liege.pdf
    • https://s3.amazonaws.com/tezofuretejom/great_mills_high_school_md.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c206.bin
b4309d2420830e3bc3dc9af4afb7acdfaf6dba7e1c3d3be735cbffe3d3e5b80f
pdf-font-stream PDF embedded font (sfnt) at offset 0xC206 5076 bytes
font_01_sfnt_off0000d341.bin
77ac6703061ac1c9c38102ac392874a7fb669bfa3fc030f1643db96704c29155
pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 10436 bytes