Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbaf579e8ebda470…

MALICIOUS

PDF

70.6 KB Created: 2021-02-25 07:47:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0a102e7405665228438613297e6ace62 SHA-1: 6d6913d6b1465809b6c52a793f61b810ae3c96f8 SHA-256: bbaf579e8ebda470338a9a73059a44ab13544606de1cd39117139f2eea002787
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=how+to+use+bissell+proheat+2x+revolution PDF link annotation
    • https://cdn.sqhk.co/jegisizozul/hejhMgc/57541875660.pdfIn PDF document text
    • http://udilische.club/kesosamiwisotifogufomtoeui.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/hjpieSa/dragon_quest_builders_switch_eb_games.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/ahjghfr/real_flip_sequin_live_screensaver.pdfIn PDF document text
    • http://byt-upak.ru/audi_q5_2018_service_manuala3xqu.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/rifaxivekezubumo.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/wjaiioN/rolling_stones_oversized_t_shirt_dress.pdfIn PDF document text
    • http://form-copyrightservices.com/green_day_audio_songsl5llz.pdfIn PDF document text
    • http://goodsun.space/crochet_star_stitch_afghan_patterndk1ln.pdfIn PDF document text
    • http://converstarget.ru/vasuzikaketedamisqkq0o.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/dedinavesute/firefowolik.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/barack_obama_speech.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_off0000d67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67E 5360 bytes
SHA-256: c7d4d8f4e098e46bf9ba52e40bab051cf842facb0fc2458b9ee6955a31c9cb80
font_01_sfnt_off0000e8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C2 10348 bytes
SHA-256: aa88cb1f66d7948151071c64b691f0af542af6944f157f5d436ecb88e2148530