Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57c5ff06be48096…

MALICIOUS

PDF

64.1 KB Created: 2021-02-18 13:11:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0a2af9c419f1e791f10b7d95f5c9664a SHA-1: 33c680ca09871fa8d925f240daf6cfda752490a0 SHA-256: b57c5ff06be480967dd84b314afefaf84b650fa5ec91e27bd847c754f33995a9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=camp+mia+shalom+directions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414341/normal_5fffc281c2454.pdfIn PDF document text
    • https://duzunadi.weebly.com/uploads/1/3/0/9/130969775/xegezasini-padux.pdfIn PDF document text
    • https://bejixetixozivi.weebly.com/uploads/1/3/4/4/134499198/wenanibewe-wibodumezagirib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505699/normal_601af580e4165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500889/normal_60236da56218f.pdfIn PDF document text
    • https://vifiboreb.weebly.com/uploads/1/3/5/3/135349596/df468.pdfIn PDF document text
    • http://rulabalelenifop.iblogger.org/15295848285.pdfIn PDF document text
    • https://doritader.weebly.com/uploads/1/3/4/8/134885844/71f31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389090/normal_60289d779a193.pdfIn PDF document text
    • https://zatitudebijozi.weebly.com/uploads/1/3/4/4/134460539/pomarunowapo.pdfIn PDF document text
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/vafejukojaxasufid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444646/normal_5fdbd401129c0.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/marimejerebo/doferifasivupeduwavagop.pdfIn PDF document text
    • http://dunedobaxapekir.epizy.com/22471174264.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/fakuponojaduja.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/sisebevofivojez.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/bls_manual_2019.pdfIn PDF document text
    • http://zoketuru.epizy.com/83685772857.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/mumuxenurevenapalox.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_off0000becf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBECF 5220 bytes
SHA-256: ac5212994f97b5c87c73c962bf525ed9889943738736963dc1763dfb7e54bf09
font_01_sfnt_off0000d05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05A 10184 bytes
SHA-256: bf848ec508f11f2d329c7dc4853686f70ff55dc785105fd2b50531fef88ecaa2

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