Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed97265e74c7c915…

MALICIOUS

PDF

69.0 KB Created: 2020-12-26 10:24:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 881ee04bfbe1bb5b7a9ddcff58bebcfa SHA-1: 908744a1ddd0dec4041fcc0996625d412829cfeb SHA-256: ed97265e74c7c9156d4986a696fa613b7eed679ae83a9b9c875a94b3a74d272a
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/strik?utm_term=disarm+bombs+fortnite+locations PDF link annotation
    • https://cdn.sqhk.co/kupovite/i4ghmdP/71247758433.pdfIn PDF document text
    • https://cdn.sqhk.co/zewuxumaro/idujjfG/ono_sve_sto_znas_o_meni_knjiga.pdfIn PDF document text
    • https://cdn.sqhk.co/xumobopore/Ohfz7he/gladiator_rising_2_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456996/normal_5fbc917cdc07e.pdfIn PDF document text
    • https://mukekevujawova.weebly.com/uploads/1/3/0/9/130969498/681276aae31845c.pdfIn PDF document text
    • https://cdn.sqhk.co/wuseguwe/gciegjo/vejepogafejasakukekenog.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzezajolu/hOogh58/ordinal_data_definition_example.pdfIn PDF document text
    • https://dowikawi.weebly.com/uploads/1/3/4/7/134741621/sorologejixoluzopaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8e6fe97442e.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/buganabowumujef/multiplying_variables_with_exponents_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/definition_of_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/cold_pursuit_rating_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/50360623389.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_off0000d26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26F 5168 bytes
SHA-256: f5627fe71ef1abc77de83c01b03da7058912f91381ec24b625bd0b5a8dbd082e
font_01_sfnt_off0000e3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EF 10324 bytes
SHA-256: 03041c6d7bd93059f7336bdf8646137b377eda914e366d082d6195a1d0b719ea