Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ad21e72908debf…

MALICIOUS

PDF

68.3 KB Created: 2021-01-23 00:08:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 50b974cb897422fe1af3ed1f79eb4bd2 SHA-1: 6885ee3609e0a37677f44e8f1b268541453d369f SHA-256: d1ad21e72908debf6e1fd91ac118c4f9b586fae2be7ff20d6885596650172dd4
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://seumenha.ru/aws?utm_term=guia+de+adestramento+de+c%25C3%25A3es+pdf+gratis PDF link annotation
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/7729458.pdfIn PDF document text
    • https://cdn.sqhk.co/pixisuja/hcggGgd/palulamajonegi.pdfIn PDF document text
    • https://faxomozux.weebly.com/uploads/1/3/0/7/130775398/pimonesipabo.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/SYegijg/pokemon_go_friends_codes_japan.pdfIn PDF document text
    • https://pixavegabub.weebly.com/uploads/1/3/5/3/135307945/1593899.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/hb0jahg/judetifopamomij.pdfIn PDF document text
    • https://vukujaxirebes.weebly.com/uploads/1/3/4/1/134108713/3737709.pdfIn PDF document text
    • https://dexapapasogixeb.weebly.com/uploads/1/3/1/3/131384013/c44cf9.pdfIn PDF document text
    • https://sukanoxe.weebly.com/uploads/1/3/1/4/131453950/105c20c3f498a15.pdfIn PDF document text
    • https://gefozusep.weebly.com/uploads/1/3/5/3/135346228/e21a2a.pdfIn PDF document text
    • https://site-1174473.mozfiles.com/files/1174473/advanced_medical_microbiology.pdfIn PDF document text
    • https://gumelajijepepa.weebly.com/uploads/1/3/4/6/134639918/filexa-jigivemizo-kisofisagisepa-banidavu.pdfIn PDF document text
    • https://rokawutavepuma.weebly.com/uploads/1/3/0/7/130776645/a59168b.pdfIn PDF document text
    • https://midamexup.weebly.com/uploads/1/3/5/3/135314938/538f9e9.pdfIn PDF document text
    • https://dijafujuzu.weebly.com/uploads/1/3/4/3/134369935/welupoz_rafavalewogova_mezaba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC857 5792 bytes
SHA-256: b7a4744d5ae29ac25c82cb9d30661058bf76aaa8d7721f6b3c5333cf62840a27
font_01_sfnt_off0000db6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6C 12752 bytes
SHA-256: 638ede172d252106af05690abc6c9947a71ece18189a1ea9f482feae0fee1df3