Malicious PDF — malware analysis report

Static analysis result for SHA-256 123f24ba688224d0…

MALICIOUS

PDF

72.2 KB Created: 2021-02-27 22:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 082ad9f1fb9447b6f71ddf2df5673f8d SHA-1: 4a48735f27f2563ebdf20b39c1eb37a3ba92b001 SHA-256: 123f24ba688224d03a3700f8268e76615df66cae9ee9f78ad85d818f33cffd0f
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://bologen.ru/wix?keyword=it+chapter+two+movie+free+download+in+hindi PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379964/normal_600410f013041.pdfIn PDF document text
    • https://kufoxigokutef.weebly.com/uploads/1/3/1/8/131856815/bimunokexezebi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483610/normal_601e659651b0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448976/normal_601220a83ef79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371240/normal_5ff95df2954d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368731/normal_60208d603dcc0.pdfIn PDF document text
    • https://fitisasituwag.weebly.com/uploads/1/3/4/8/134846324/mogalazadebuxuvasubo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465919/normal_5fee0ee60d090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489032/normal_6034dbcd77293.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_6009241974558.pdfIn PDF document text
    • https://lokogupata.weebly.com/uploads/1/3/5/9/135959524/jatugesatovevepote.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/nisatajosifowiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_6006d10ddc102.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491152/normal_6006b6332bf17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485818/normal_5feaf06306374.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/60165244d80a38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376875/normal_60000a580c14c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385633/normal_5fdf9c10935f7.pdfIn PDF document text
    • https://gemiporelowagi.weebly.com/uploads/1/3/0/7/130775846/e3ae3647b51507.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_off0000dd22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD22 5304 bytes
SHA-256: 324b3be506920e0695471039772a59cb985ee146791aec37a0e578c08b4c49c7
font_01_sfnt_off0000ef20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF20 10632 bytes
SHA-256: 7a6ce50c08b4f45434384e947e98f6b22e673ebccb06b2aa6b91c1f86751d11b

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