Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cb5fafd631e7c3…

MALICIOUS

PDF

73.0 KB Created: 2021-02-12 13:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 227f808e487a0aad9a826cdb38d4013e SHA-1: a94bb56c28ed6a472da36009d992447856a6a069 SHA-256: e9cb5fafd631e7c350c15c668594ed41b78d710472b9a2228a9e173e2ba6003f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=physical+science+mass+and+weight+worksheet+answers PDF link annotation
    • https://poxuroli.weebly.com/uploads/1/3/0/7/130738943/50bd6.pdfIn PDF document text
    • http://tipografiyav.moscow/dedofipozitebaeshlx.pdfIn PDF document text
    • http://meetplafond.xyz/new_catholic_mass_responses3s7a7.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/Jvygijc/rc_racer_car.pdfIn PDF document text
    • http://lastmarkt.ru/angular_4_file_from_urlr7k6u.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/ejdicAH/xogujalan.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/icHPjbO/best_drum_machine_vst_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/namemedoxake/ygdRjht/mega_millions_three_numbers_payout.pdfIn PDF document text
    • http://everydays.space/free_dating_sites_for_bisexual_females8s0ev.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/pinuzogimoxupiluybt3y.pdfIn PDF document text
    • http://fragcups.com/dejuzazusukonenufusuxil5rfcy.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/fulosobezur/android_auto_head_unit_review.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_off0000de69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE69 5612 bytes
SHA-256: bad7e14e9c215beba277f76afb2e70acaab8a4ef9cb4bcea8e242888019576bb
font_01_sfnt_off0000f170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF170 10988 bytes
SHA-256: 76d6182ff1a4242dce6734a6d70d040c51fb8bbf9849134fb03453c8f2b1b7a8