Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f96d912a637e41…

MALICIOUS

PDF

67.2 KB Created: 2021-03-06 10:33:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a8175ed2ad43d80ee4502babb2458fe3 SHA-1: c9167ab2c03817f20536801917abe44c21645464 SHA-256: 98f96d912a637e411ba6604966360fa42dcec73bd7892afd54985b80e537e941
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=soundbuds+slim+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4503033/normal_6006a05d75ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374847/normal_5fd7b6efd29ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_600fcb4e6f68c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406787/normal_5fdee61ccf89c.pdfIn PDF document text
    • https://cdn.sqhk.co/dazenolaxuj/YjgUgdd/pobuzadosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466398/normal_601cb2afb7441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5fe89b9e9c040.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_604063a10a273.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/fbgdhe0/pexurulogubofepabo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420014/normal_5fc6fad4b1d36.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/babuxufarizuxur/relesuzojid.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/60384139352.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/gadebijedanem.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/30765903295.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/music_video_camera_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/tetadokaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/repizomazu.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/penujukigisajuverobodufa.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/potas.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/dynasty_warriors_8_xtreme_legends_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/picture_oxford_dictionary_english-_vietnam.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/how_to_replace_drive_belt_on_ariens_lawn_mower.pdfIn PDF document text
    • https://fccid.io/2AOKB-A3410/User-Manual/15-A3410-UserMan-4189287.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_off0000cb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4A 5120 bytes
SHA-256: 6ad5da142484559620d58d25c00b68b5bd137b4be61ef1f7889d5ecb694c0bf2
font_01_sfnt_off0000dc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC98 10308 bytes
SHA-256: 6c5922ab77a4e1b166b6e3b27fc7c92ee24d430216d5f84db529ebc6c4e37e6b

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