Malicious PDF — malware analysis report

Static analysis result for SHA-256 718ed2de52417185…

MALICIOUS

PDF

80.5 KB Created: 2021-02-09 13:05:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ce7e5295c243d7456577bb6e6e511ada SHA-1: 78490183a7ca8f88895fb6b21ffd4532b52c6245 SHA-256: 718ed2de52417185254294173b1c3bdc6cbfdce7008738bbb868634f0c178052
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=photoshop%20sketch%20brushes%20free In PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_6007dc472ece0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fe415cbd8b6e.pdfIn PDF document text
    • https://zoxiniguve.weebly.com/uploads/1/3/4/5/134584112/rawefaxag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463807/normal_5fd641976d2cd.pdfIn PDF document text
    • https://jinepesel.weebly.com/uploads/1/3/5/3/135346763/4087456491cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5fe8543d3f7cc.pdfIn PDF document text
    • https://rarozevalir.weebly.com/uploads/1/3/1/4/131437937/9446439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_601af920c0109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369654/normal_6008b16105cf5.pdfIn PDF document text
    • https://linepofikoleku.weebly.com/uploads/1/3/4/4/134492010/9481dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_600fdeeb09021.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_601a391bb9a3d.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/sepawi/mawodumugavema.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/saxelotijubiboradiwude.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/abscesso_hepatico_piogenico.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_off0000fcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC7 5068 bytes
SHA-256: 7b425dd817185e130b31bea5c4f35c70e8bf34c44bb1145a04461bbbe18d7eff
font_01_sfnt_off00010dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFD 11532 bytes
SHA-256: 076ca196b7d5079dd17cbfe9a7024e5f9abaab268aaab404f38a45a27d497734

Open this report in the interactive analyzer, or submit your own file for analysis.