Malicious PDF — malware analysis report

Static analysis result for SHA-256 d272d753f108dab8…

MALICIOUS

PDF

71.5 KB Created: 2021-03-01 03:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6b73551eedc188f55bd795a70a3c990e SHA-1: 698887705d2fd85c7654ee8adaf415897ff24331 SHA-256: d272d753f108dab860c65f2de8141197f43a7f1d117c5f87dd44751a7e1238c1
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://botokaw.ru/award?keyword=wayne+dyer+books+pdf+free+download PDF link annotation
    • http://dresdenpharma.ru/82088871777j39oz.pdfIn PDF document text
    • http://criticcxck.space/challenge_full_hd_bhojpuri_moviee0hy9.pdfIn PDF document text
    • https://jewakazakiven.weebly.com/uploads/1/3/1/4/131437085/267668307.pdfIn PDF document text
    • https://vigodabazo.weebly.com/uploads/1/3/4/8/134872933/2892832.pdfIn PDF document text
    • https://cdn.sqhk.co/kilalovuge/gijDPDW/25793589213.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/ijheOhf/zelle_wells_fargo_customer_service.pdfIn PDF document text
    • https://jewupoma.weebly.com/uploads/1/3/1/4/131437657/lofidozozozapi.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/iigijNt/the_wolf_of_wall_street_full_movie.pdfIn PDF document text
    • http://drawer.icu/59719638444kc39a.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/ciijgeP/extreme_power_boat_races_2018.pdfIn PDF document text
    • https://rekixalegupu.weebly.com/uploads/1/3/2/7/132740488/e7d4eb13e482.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zubiluwetij.myartsonline.com/vasika.pdfIn PDF document text
    • http://mifojizu.myartsonline.com/86720556816.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_off0000da92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA92 5444 bytes
SHA-256: 87438c230c92cb7e8459f74b9b51b2642092373d1023199daaf5d0044c3b1dac
font_01_sfnt_off0000ed43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED43 10420 bytes
SHA-256: 4da1e68ab5dac0603a95c72f2868695638725f00fcd85d23ee134fd0ade2cc96