Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5285a0374b3d2a7…

MALICIOUS

PDF

71.0 KB Created: 2021-02-28 01:55:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5ac7e954f6494d0e31e93156b01a361f SHA-1: ce75030f94e02e2c9f0f7e748bc201ff11d2571b SHA-256: d5285a0374b3d2a771425fb2f6f297dd6ba5887bc979c9e3d9d759cdec4c7382
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/award?keyword=sony+str-k660p+manual PDF link annotation
    • https://nofakuxuwuxow.weebly.com/uploads/1/3/4/6/134684799/luwatemokideda.pdfIn PDF document text
    • http://weinmvc.net/mass_transportation_systemhkpa1.pdfIn PDF document text
    • https://lakafoxure.weebly.com/uploads/1/3/4/2/134266374/7935454.pdfIn PDF document text
    • https://xizuxikeg.weebly.com/uploads/1/3/0/7/130740292/wegarezazidifo-risefolifumom.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/how_to_get_a_bachelors_degree_in_information_technology.pdfIn PDF document text
    • http://sberhome.ru/can_i_become_a_nutritionist_without_a_degreeuahar.pdfIn PDF document text
    • https://nozugaxuxanukuj.weebly.com/uploads/1/3/0/8/130813784/7f1ec.pdfIn PDF document text
    • http://shtampshop.ru/tencent_buddy_emulator_apkcnu6x.pdfIn PDF document text
    • https://gojudewusidaza.weebly.com/uploads/1/3/4/8/134888042/boluzekeme-bamimis-dunokusejugisoj-gezexunax.pdfIn PDF document text
    • http://shmelev.pro/spanish_dictionary_booksk6gn.pdfIn PDF document text
    • http://grinallex.shop/la_spiaggia_cesare_pavese0hhce.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/befafuni/endless_summer_book_1_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/aditya_birla_health_insurance_claim_form.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/93579831972.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/copper_corrugated_roofing_sheets.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_off0000d5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A0 5560 bytes
SHA-256: bb9cf3b7abc6a954def589f60f704a8be60aa6feffe545089e555473b254b7dc
font_01_sfnt_off0000e87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87A 11428 bytes
SHA-256: db5c84b06432e4a2db26e185d48aec4d5c280830878583666ef276e7398e2cb0