Malicious PDF — malware analysis report

Static analysis result for SHA-256 707f938656a93e97…

MALICIOUS

PDF

69.2 KB Created: 2021-02-27 00:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5f6d6c88945316d3c09730d23a6a9ae7 SHA-1: f6515f7fcd90af21efe22adf5ef009448b68ab87 SHA-256: 707f938656a93e977ce30e32015763dc20180cc04323efff54bfedafb98aca7a
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://ponafet.ru/award?keyword=how+to+use+bissell+spot+clean+proheat+pet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387810/normal_5ff0a6f89d50a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420745/normal_5fdc544b48caa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485579/normal_5fdc9916053c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fe3af5d95183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_6029f2fbac4c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5fd0fefa863c5.pdfIn PDF document text
    • https://ditoleruv.weebly.com/uploads/1/3/5/3/135345680/kavojagupe-jitazusufet-lijot-nutofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426960/normal_5ffdf17ecf537.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365613/normal_5ff815e1b4670.pdfIn PDF document text
    • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/xuxiwivapigosigux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478926/normal_6038b96ef027e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460471/normal_5fffdb376c960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497110/normal_6013a4b3d6696.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/20070165581.pdfIn PDF document text
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/7bb43ad4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fujuresaw.epizy.com/badaga_dance_video_songs_free.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_off0000d321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD321 5212 bytes
SHA-256: b39670c3e5292b2f37baaaf0b40ff7c8aa559dd7d0e5012fd090515f8f99aea7
font_01_sfnt_off0000e4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E0 10100 bytes
SHA-256: 67a9e5c3dc7d38f81051a9ca60f5a4c200a47a4d62dd2d4d95d73c6c078553e9