Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40699ddaddb403f…

MALICIOUS

PDF

62.8 KB Created: 2021-02-10 22:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5d81ee93209ef2c318260e596193dace SHA-1: b45370e51da0c8704286578e360b1706a0a971ba SHA-256: f40699ddaddb403f1ca7db3f6068c2dc53defa50e949f31a0179daf5dbc8ace2
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://maypoin.ru/aws?utm_term=overview+classification+of+matter+worksheet+answer+key PDF link annotation
    • https://cdn.sqhk.co/pixazizaze/0ibjrQE/photo_studio_los_angeles.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/vjaDxgj/85814965130.pdfIn PDF document text
    • http://sewiximafa.22web.org/mewuzod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500432/normal_601b092a08fd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413121/normal_60031d2c7e9cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5fc9cc42dbecb.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/gelawiweza/85998082973.pdfIn PDF document text
    • http://pomisatavep.rf.gd/51609202901.pdfIn PDF document text
    • http://felubumasosazi.epizy.com/vovebuwifonum.pdfIn PDF document text
    • http://gefutikavuza.epizy.com/avengers_cartoon_movie_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/physics_centripetal_force_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/15908139197.pdfIn PDF document text
    • http://jufebiwewizeza.rf.gd/jiridufidelefapoxexebi.pdfIn PDF document text
    • http://xugonowelimije.epizy.com/dabebabapunuxamoxolatu.pdfIn PDF document text
    • http://banumekopi.epizy.com/posavazunavulelewokuf.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_off0000bc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC17 5468 bytes
SHA-256: 274053bc36bd44d721a3ae45a93e9dd552c964df598dd45b92a1c8e2efc79026
font_01_sfnt_off0000ce9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9F 9292 bytes
SHA-256: 5d0cba35e4b99792eaa06263ece506674d69f947a7581e609cc1a715bf2bc79e