Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc4ec3fd02a6067e…

MALICIOUS

PDF

74.6 KB Created: 2021-03-03 18:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab3ca6176e434ddc996eda36be0ac8b0 SHA-1: d7f07448bc8487293ab10537781e07814cda45a5 SHA-256: dc4ec3fd02a6067ea36b719d0aea99ba0a2173156b32a24cde5737a8be482e25
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://bologen.ru/123?utm_term=how+to+charge+12v+ups+battery PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450259/normal_602f3fc1349ae.pdfIn PDF document text
    • https://fakazurirogedim.weebly.com/uploads/1/3/4/7/134743668/3653279.pdfIn PDF document text
    • http://replyua.site/charlie_and_the_chocolate_factory_1971_streamingx74bt.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/hiEp5gf/nba_2k20_switch_review_graphics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480589/normal_5fde88f492ebb.pdfIn PDF document text
    • https://cdn.sqhk.co/daboxazile/SjMEzjU/84710188612.pdfIn PDF document text
    • http://helpcenter.business/5_seconds_of_summer_members_net_worth2duu2.pdfIn PDF document text
    • http://papewakoj.22web.org/89621370130.pdfIn PDF document text
    • http://taher-tcac.com/dizisititurijp7znb.pdfIn PDF document text
    • https://vuxutuwatojo.weebly.com/uploads/1/3/4/6/134625262/tuxebogajem_womiwazara_rufevijovezide.pdfIn PDF document text
    • http://dokusamatofapig.iblogger.org/mitojen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mesobuze.epizy.com/eve_starter_guide.pdfIn PDF document text
    • http://niginikixino.epizy.com/78453960681.pdfIn PDF document text
    • http://muxofitum.rf.gd/zidufexetabafija.pdfIn PDF document text
    • http://kofodubelo.rf.gd/48040318810.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_off0000e491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE491 5700 bytes
SHA-256: 5652188a56fe3edf7346a2a9e572a8c1a4c00d7bf712d549a880c3c9cf5b7f61
font_01_sfnt_off0000f81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81C 11112 bytes
SHA-256: 9505f5ca1b179a220a27a4654c98f54fad953ed10db1d0843fa430e5d1092c30