Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf94b976bb333b6…

MALICIOUS

PDF

72.2 KB Created: 2021-03-02 15:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 512e9b90f5acb996c9a1848381dc151a SHA-1: a354b8633ac64cf5efabe2d56c64ae2535c9f0a3 SHA-256: 3bf94b976bb333b6794653a5f08f28cdd9f5b9267d87062980c6b69e5077470f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wix?keyword=swimmers+ear+divers PDF link annotation
    • http://janorewaxeno.mygamesonline.org/skyrim_se_vampire_armor_retexture.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/pafov.pdfIn PDF document text
    • http://guzolupe.iblogger.org/malubarutusif.pdfIn PDF document text
    • https://molobaguzali.weebly.com/uploads/1/3/0/7/130739923/e8fcfbc56.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/zurapodonejus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386828/normal_5fcecb741b0e3.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/how_to_hook_up_a_portable_dishwasher_to_the_sink.pdfIn PDF document text
    • http://javaxirivibewi.mygamesonline.org/why_otto_cycle_is_more_efficient_than_diesel_cycle.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/navy_advancement_center_cpo_results.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_5fd5f4118c6e5.pdfIn PDF document text
    • https://nesibebinirudeb.weebly.com/uploads/1/3/5/3/135311353/3044372.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzasujonumex.epizy.com/aviation_industry_report.pdfIn PDF document text
    • http://parubixus.rf.gd/how_to_make_a_sad_person_happy_quotes.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/the_art_of_racing_in_the_rain_chapter_23_summary.pdfIn PDF document text
    • http://nunoxemimo.rf.gd/60389717523.pdfIn PDF document text
    • http://sapuzif.epizy.com/10777893327.pdfIn PDF document text
    • http://zamonile.epizy.com/calibre_semibold_font_free.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_off0000df51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF51 5192 bytes
SHA-256: d4b2ad8695cfc9146a06945078e8aefc9908c3b14ef4d5783eedd774b411e397
font_01_sfnt_off0000f0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F3 10212 bytes
SHA-256: 7d3b8ea9879e7ebc132c3f54a59491c00b1305ede343f0056acbcc6e41d64875