Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fcbbf02a7931b3…

MALICIOUS

PDF

71.8 KB Created: 2021-03-03 11:22:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 35156809a8c5e540e4248b122329c0cb SHA-1: fcc885141f5ec2ca04155db55fe7ee2c6300a243 SHA-256: c6fcbbf02a7931b34f58e4c80a39e226c74d689b3c678bf97cebc9c34ce00b7d
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://baarspo.ru/award?keyword=soil+mechanics+and+foundation+engineering+by+purushothama+raj+pdf+free+download PDF link annotation
    • http://smartycredit.info/74102455136t6zlg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_602ed8938d9ea.pdfIn PDF document text
    • http://repochka.site/is_christian_healthcare_ministries_legitimateb6m3l.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/jN7l9pF/galaxy_theatre_cannery_north_las_vegas.pdfIn PDF document text
    • http://closemaze.com/jojavaxanekonajararavatj8s5h.pdfIn PDF document text
    • https://cdn.sqhk.co/zonigita/LtjjPY3/webuz.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/hgOigji/warhammer_army_builder_game.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/tarizazovipatasixefubegi.pdfIn PDF document text
    • https://cdn.sqhk.co/zexetiminav/ggbGFhe/33118167779.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366660/normal_5fce6ee4d4325.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444100/normal_5fcdac39a21df.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/jubomofevotezox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nupowabel.rf.gd/71911746049.pdfIn PDF document text
    • http://sisuvoxodukon.epizy.com/poleputenuriguno.pdfIn PDF document text
    • http://jigujirew.epizy.com/girutinoxipatalegukuzo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2D 5964 bytes
SHA-256: 817ce76a0e9d5091599aa019ddbc6ed016f37ddab9a717751d80b483b4a73fb7
font_01_sfnt_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 9876 bytes
SHA-256: 278decef094021ca47d9662ca22974267d2aafdcecb2b8dacb96166290c51c43
font_02_sfnt_off00010310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10310 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176