Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4f7462224e9da63…

MALICIOUS

PDF

71.1 KB Created: 2021-01-22 02:31:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 25eae3687d4d14d373ba531fcd910c95 SHA-1: b4d1cfc34d321eb94ce93072718e0219f634bedc SHA-256: f4f7462224e9da6337969601c4abe74ab97b7f22dcbf958193da7dee629eea19
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=best%20indoor%20go%20karts%20orlando PDF link annotation
    • https://site-1172777.mozfiles.com/files/1172777/ferejisutofawegekune.pdfIn PDF document text
    • https://site-1227499.mozfiles.com/files/1227499/warhammer_dwarfs_guide.pdfIn PDF document text
    • https://site-1180756.mozfiles.com/files/1180756/wasivubupunufemunug.pdfIn PDF document text
    • https://nevedafixi.weebly.com/uploads/1/3/1/3/131398567/5657327.pdfIn PDF document text
    • https://mefixakiderix.weebly.com/uploads/1/3/4/3/134319494/sojoriwonopeka_dajasorenaxo_jaxiguwub.pdfIn PDF document text
    • https://rotutipugav.weebly.com/uploads/1/3/4/7/134750083/ef2210.pdfIn PDF document text
    • https://mogisitubetaw.weebly.com/uploads/1/3/4/4/134496388/cd1f0.pdfIn PDF document text
    • https://pefikasulanak.weebly.com/uploads/1/3/4/3/134350375/zalomenelawowef-dejikixun-kavoxewifepov-viloketilukufe.pdfIn PDF document text
    • https://fezipogapatud.weebly.com/uploads/1/3/4/8/134888370/914b8ff.pdfIn PDF document text
    • https://cdn.sqhk.co/zobarimumuje/efi2sic/andor_s_trail_mine_for_the_taking.pdfIn PDF document text
    • https://femovoba.weebly.com/uploads/1/3/0/7/130775826/seloxiz.pdfIn PDF document text
    • https://newakikijako.weebly.com/uploads/1/3/4/3/134351088/bemapoge.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/ragejufa/54466071572.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/wujafuzovogofuguwi.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/lowazugawijimeruruxaru.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_off0000d90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90D 5104 bytes
SHA-256: debee3f8490b44989a9a74cb913c4430ead8b84b5e2c8c0df4a4e4a66018413e
font_01_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 10896 bytes
SHA-256: af30ee7f085a4d6ebec5d43e26c3297c1a4eb5a52db2348ad5371f4c94d302f8