Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d0f84dc180a249…

MALICIOUS

PDF

71.5 KB Created: 2021-02-27 11:04:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 47735586171775b7b9405e00c2b31d5e SHA-1: fece9e64222e271c0f0320e242fee6e0e4534f17 SHA-256: 36d0f84dc180a249770c08786d5e4d6f2a83c94d0d39a89a0f6514345f4485fc
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/award?keyword=ezdrummer+2+made+of+metal+crack PDF link annotation
    • https://cdn.sqhk.co/guvevifowo/jdlGAKR/recarga_certa_vt.pdfIn PDF document text
    • https://cdn.sqhk.co/bulegumu/jjghak3/wallpaper_republic_of_gamers_4k.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/titokonosepaza-fidojeketer-fimol.pdfIn PDF document text
    • https://dazutexigamufo.weebly.com/uploads/1/3/2/7/132740900/feedc70.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/eYYXhjc/newezagapabipumavux.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/xaliwalufoguni/blaise_pascal_pensees_francais.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/best_to_word_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/free_dd_campaigns_reddit.pdfIn PDF document text
    • http://satuvet.epizy.com/66465016268.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/11408975543.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/pavemibukaxinulifilanebav.pdfIn PDF document text
    • http://kazixovo.rf.gd/business_letter_template_design.pdfIn PDF document text
    • http://sagalesokalu.epizy.com/dekaron_rising_ak_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/movies_sites_indian.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/kageviremezegoxuteg.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/jesazoxikojorobuwuxew.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_off0000d9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A6 5192 bytes
SHA-256: 44db671a83a2c0be32a822d79884271ab2598ca17a1df6b0ded6c0b0fd3692e2
font_01_sfnt_off0000eb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB48 10932 bytes
SHA-256: c22510e2484eb1cc779812b06fb8c963f1037cf17a55643c31bc39288eb73693