Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbf45544dbb7664…

MALICIOUS

PDF

71.9 KB Created: 2021-03-04 07:01:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5fc48d05cde2d2f7dfd00350be3ae368 SHA-1: 76c9fe01ce52f04b533f692362fe36cda0b7847f SHA-256: bfbf45544dbb76643bd4701bb1a0243b4e8628824182b24f9b44aedf19a0d8e4
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://maypoin.ru/wix?keyword=daewoo+window+air+conditioner+manual PDF link annotation
    • http://prostochillforum.fun/90287001285gwzh1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5fd7f4aeb6a6f.pdfIn PDF document text
    • http://fortuneo-enligne.com/backflip_challenge_tiktokbdpp0.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/yghrKhf/mod_creator_for_minecraft_pe_pro_apk.pdfIn PDF document text
    • https://paxobafu.weebly.com/uploads/1/3/4/6/134697986/pewuwozim.pdfIn PDF document text
    • http://wajobok.iblogger.org/how_to_answer_willingness_to_relocate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382620/normal_603bb42ad716f.pdfIn PDF document text
    • https://kadefevexenikoz.weebly.com/uploads/1/3/0/8/130813118/riraguwonome_fitelilixidupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484820/normal_603cc9b5f0a8e.pdfIn PDF document text
    • http://hyipinvest.site/download_serato_dj_lite_macijfme.pdfIn PDF document text
    • https://sikenobavusemel.weebly.com/uploads/1/3/2/6/132682861/zewabaverotanadumex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416806/normal_5fe279683ffde.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/panalipolifod/12047622502.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/15127743745.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_off0000df39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF39 4996 bytes
SHA-256: 241f0ee30831d4cd71e72e34aa87724d78ecc45c242336e405a14d871e2546d6
font_01_sfnt_off0000f039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF039 10184 bytes
SHA-256: 5a85b6370c0266e0f3a9f7ad9d93278f0706f7df1a7f4fe317c98945d609d6d3