Malicious PDF — malware analysis report

Static analysis result for SHA-256 409838f34accf1ce…

MALICIOUS

PDF

69.5 KB Created: 2021-02-11 04:22:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f64764e0b1470a5e0e2fec1e92c7e6fe SHA-1: c333fe02c6e36dd067e11aab31b1c9b089a68ec2 SHA-256: 409838f34accf1cea0dbcd46d8a6592e0bd8dd966b199759d1b7b6c17fa20ffc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/square?utm_term=employment+contract+addendum+template PDF link annotation
    • http://agent-ritual495.online/canzoniere_musica_italiana_chitarrap9787.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/ce0ae49.pdfIn PDF document text
    • https://kapejipe.weebly.com/uploads/1/3/1/0/131070538/matuwoli.pdfIn PDF document text
    • https://fuviwamirami.weebly.com/uploads/1/3/5/3/135351498/5303521.pdfIn PDF document text
    • http://bumaga.bz/tcs_previous_email_writing_questions_with_answerscr5cw.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/manual_belson_stl_5708h9lp7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477877/normal_60223ed3b0ff6.pdfIn PDF document text
    • http://gagafelame.22web.org/anti_corruption_commission_maldives_job_application_form.pdfIn PDF document text
    • http://instacopyrightcenter.com/commuter_benefits_card_covid61pf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fc682ad1ade6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuxekijonudi.epizy.com/69633459985.pdfIn PDF document text
    • http://guruwemuzotal.epizy.com/76641626140.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/malakand_board_9th_date_sheet_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/19645144667.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/55349623862.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_off0000d448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD448 5100 bytes
SHA-256: b9ccc5b9d24aa79911ac20effedfb6a2fe9e349dc8d97c88d23378c2aa06a567
font_01_sfnt_off0000e596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE596 10416 bytes
SHA-256: cf93b578a5b58fa63cafb8d14f74891ce697f6e50df8e539ac789ddb6ff529da