Malicious PDF — malware analysis report

Static analysis result for SHA-256 d262ac17fb73369d…

MALICIOUS

PDF

71.0 KB Created: 2021-02-17 23:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52613739fbf402ca9d29542e177168bd SHA-1: 0126a55f1e831443b1af56607d4c23eef8b61ec0 SHA-256: d262ac17fb73369df11b9bfa688ca0bd6814e5e0648c6c89234fe3f5c82e2613
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wix?keyword=life+of+pi+essays+pdf PDF link annotation
    • http://construt.site/referencing_and_citation_in_research_methodologyzmsfg.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/rgjJpAr/86308680715.pdfIn PDF document text
    • https://cdn.sqhk.co/wugeguxu/fgivjeY/square_bird_baths_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/dijl5Af/mobile_passport_no_longer_in_atlanta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482402/normal_601f54473056d.pdfIn PDF document text
    • http://cg-designer.xyz/50967109450sjc8s.pdfIn PDF document text
    • http://promooffer.site/jw_library_espanol_onlinek00li.pdfIn PDF document text
    • http://heretythere.site/kubota_owners_manual_free_download5dh5y.pdfIn PDF document text
    • http://unityfree.xyz/cooking_with_herbs_and_spicesqvk68.pdfIn PDF document text
    • https://cdn.sqhk.co/boguzivipel/piagidx/glass_ceiling_smasher.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/ijKhehc/star_girl_beauty_queen_apk.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/fonibinaraj/traffic_accident_report_san_antonio.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_off0000db9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9C 4952 bytes
SHA-256: 988d934ae32172dc25ea2d89f31d84732d87336f38d754566c46a8ae803412b8
font_01_sfnt_off0000ec9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9C 10316 bytes
SHA-256: d45289b3381af9425df4c0627bf3b99edfba70f14cfa2ea177bd94547d8ed255