Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c10f44be7732a45…

MALICIOUS

PDF

71.2 KB Created: 2021-02-12 23:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a7274c768c600bcd828a6192665376a7 SHA-1: c69e27e9385cca9dd0dfb260c3f72a8c96556797 SHA-256: 4c10f44be7732a45b53516deeb94462fe893b7f5d29d58bf82c8f964c3b541bb
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://seumenha.ru/wix?keyword=sasquatch+2020+bumper+sticker PDF link annotation
    • http://retys.space/pokemon_revolution_rock_climbi45f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479933/normal_6013c57b84020.pdfIn PDF document text
    • https://gemaxapofa.weebly.com/uploads/1/3/2/6/132681544/1542818.pdfIn PDF document text
    • http://grinallex.shop/jakemeravufasevepaxitiauxrp.pdfIn PDF document text
    • http://nigma24invest.online/tofovj1vuk.pdfIn PDF document text
    • http://livecopyrightverification.com/refikafezapd9cz.pdfIn PDF document text
    • https://rizizisexulap.weebly.com/uploads/1/3/1/4/131407181/4d61bbb1a3e5.pdfIn PDF document text
    • https://wilowukodol.weebly.com/uploads/1/3/4/8/134881933/6c749661b0582b.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/ihZcRcC/police_scanner_australia_app_android.pdfIn PDF document text
    • http://badge-verification-center.com/19214306659xz23s.pdfIn PDF document text
    • https://tureduritisamo.weebly.com/uploads/1/3/4/6/134676104/sevesuwebaxitakexami.pdfIn PDF document text
    • https://kavekoda.weebly.com/uploads/1/3/5/3/135326791/4e30c927aa0.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/vokeri/nozavif.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/camp_rock_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/nogifiri.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_off0000d847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD847 5848 bytes
SHA-256: d652c51de0e60693c6e86ab6fabfc2746859899583853b20fb304b46628f0317
font_01_sfnt_off0000ebfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFE 10616 bytes
SHA-256: 06e39bb349b5a17b78e5da701bef592d0b4ac39e9b84ceb50898f13adcc897cb