Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade1c5e74d87060c…

MALICIOUS

PDF

72.4 KB Created: 2021-01-18 12:03:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 54f4eaeb8a78a3b3d4a8af456bb7ed06 SHA-1: 76898b44d5e88eef4b43cb4795ad9bab487a9071 SHA-256: ade1c5e74d87060c4fedeeb454c7ccec93b8ac30df6761a752ee280ab6d71bdc
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 traffking.ru. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffking.ru/123?utm_term=hobby+lobby+erie+pa+jobs In PDF document text
    • https://cdn.sqhk.co/kelanadu/tXujRjh/celebrity_cruises_account_login.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365580/normal_5ff5fa0bba65a.pdfIn PDF document text
    • https://cdn.sqhk.co/simizekovogi/fk3haVW/ultra_street_fighter_4_tier_list_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/gaFJijb/pk_xd_mod_money_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/jifedibodo/TAnVihc/real_moto_2020_x_games.pdfIn PDF document text
    • https://cdn.sqhk.co/lunajevon/gpzjiLH/bigfm_radio_telefonnummer.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/eqVjeuJ/43772325538.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/fajujiju/farmakologi_analgesik.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/bosirelagazexoforoguk.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/bienestar_economico_definicion.pdfIn PDF document text
    • http://diturasenupope.epizy.com/jemovedupir.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/selodaj.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/fesafukewefokadiwunaxu.pdfIn PDF document text
    • http://wetoxisifogif.epizy.com/disable_google_calendar_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/fefedugoruxetovu.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/taxi_driver_3d_android_game_free.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_off0000dd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD95 5092 bytes
SHA-256: edde79e461ec815868c0847f496cab861abc66800d2e1d4c32f083448a1f8369
font_01_sfnt_off0000eef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF5 11060 bytes
SHA-256: c3452d3836b9d52f88bb16020f4c911f896fbf303b74449cb4a27bc6893bfd89

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