Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f215b20158bc018…

MALICIOUS

PDF

65.5 KB Created: 2021-02-25 21:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01664725bb334ad57912ebb2f6021e87 SHA-1: 0693d2db9558a57edb424b9f33773fd913883b23 SHA-256: 9f215b20158bc018beb38578cb3294be89154c25bde113ae8a71711f1eaa7a8f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://maypoin.ru/wix?keyword=hawaiian+electric+webmail PDF link annotation
    • https://cdn.sqhk.co/jofijoju/eNBChPn/fake_caller_id.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/xLnhaGu/tekowubipezagirijumo.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/3cjgLji/26275776870.pdfIn PDF document text
    • https://wosowabo.weebly.com/uploads/1/3/4/3/134340570/pexepar.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/aibicEV/18581733562.pdfIn PDF document text
    • https://wogizirimabote.weebly.com/uploads/1/3/5/3/135337148/93586ace3.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/ejhjaij/business_audiobook_mindset_problem.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/ijgjahg/home_generator_transfer_panel.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/ghj3Shi/drum_set_parts_with_names.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/Ffhdjbg/led_control_box_alu_13_12v.pdfIn PDF document text
    • http://daimontimur.org/dilezajip2oct.pdfIn PDF document text
    • https://cdn.sqhk.co/salaseli/dgdjj1D/hangout_bangla_translation.pdfIn PDF document text
    • http://presalon.xyz/kofamapetidaporikmn0mm.pdfIn PDF document text
    • http://akb54.ru/bibofevavjr0v.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/3gijbhf/sobisupaxikexogabitu.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuronufepu/ieB4jat/85831911396.pdfIn PDF document text
    • http://health-top.ru/critical_care_notes_clinical_pockethl9s0.pdfIn PDF document text
    • http://tlgfree.xyz/lurawerevo6efzd.pdfIn PDF document text
    • https://cdn.sqhk.co/mekewufi/igjeiax/gifutapitiwelibufoten.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c55f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55F 4960 bytes
SHA-256: 82e2797783f33c6ef7699f41546650aceb371fc75765eb0d38630f7aab21c5d2
font_01_sfnt_off0000d639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD639 10264 bytes
SHA-256: 4c3d5229c545ff964eb1f294b6b74ab0f2071c8980fe52538369ef3bf282d8ff