Malicious PDF — malware analysis report

Static analysis result for SHA-256 64814a34e661c56f…

MALICIOUS

PDF

73.0 KB Created: 2021-02-22 13:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ef285068d32098efa00f5c85551e8028 SHA-1: 1fb3985608e9fdfc89483db2a4a4a290d72c2766 SHA-256: 64814a34e661c56fbdabc156f065b4b02350d041d6529c228c4e6c3f10279664
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://jacksth.ru/strik?utm_term=how+to+respond+to+form+interrogatories PDF link annotation
    • https://wosapinilesodiw.weebly.com/uploads/1/3/5/3/135347506/9416744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369908/normal_5ff30d8a72353.pdfIn PDF document text
    • http://doordash.link/vawotibudizolufenubogutw5k9a.pdfIn PDF document text
    • http://bokifov.iblogger.org/bloc_de_notas_windows_apk.pdfIn PDF document text
    • https://sutovuwoti.weebly.com/uploads/1/3/0/9/130968995/fuwosiboze-xisejemekawu-dejujuduloki.pdfIn PDF document text
    • http://remont-pc.website/rot_rankle_synonymgt0f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458849/normal_5fea2ed1e6808.pdfIn PDF document text
    • http://cashthe.ru/python_machine_learning_game_botmy20z.pdfIn PDF document text
    • http://idealica-italiauficiale.website/protein_structure_pogil9bkcm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420748/normal_5feb6c4b5ab7c.pdfIn PDF document text
    • http://sapinatuligoro.22web.org/does_tracfone_have_unlimited_data.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5fce958d75003.pdfIn PDF document text
    • https://rudusixan.weebly.com/uploads/1/3/0/7/130775573/zadigatufadozafema.pdfIn PDF document text
    • http://wegijezunulej.22web.org/avatar_korra_android_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mimewimirul.rf.gd/btob_wow_album.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/38781924941.pdfIn PDF document text
    • http://kugibujupedo.rf.gd/regawusipexobiganok.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/faselu.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_off0000e288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE288 5380 bytes
SHA-256: 2a3a245e6b9a0313088a253b30100242fe2a4c1183a4d2f96331c0e4b16d3127
font_01_sfnt_off0000f4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CD 9972 bytes
SHA-256: 74f6dbc1f61fe63f659bfbbcdde27c6c9c046b8aaf54db9a3918ee7ebfa32d30