Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07616155d459ac4…

MALICIOUS

PDF

71.5 KB Created: 2021-02-23 15:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d2068676118d03f8f79f647055eaf464 SHA-1: fba56a75fb254a76f4dce047b4eeb95d0f7e39fc SHA-256: e07616155d459ac4bca66bb6232672b89f8cdb0ad14d46ae82b80d65514d39cf
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=drive+ahead+sports+mod+apk+unlimited+everything PDF link annotation
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/1513844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_60126c2fbd838.pdfIn PDF document text
    • https://tomavibevojivow.weebly.com/uploads/1/3/4/0/134016690/3787729.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466135/normal_5ff25eda96087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527345/normal_601289b941c66.pdfIn PDF document text
    • https://najabokaxosol.weebly.com/uploads/1/3/5/3/135300306/9050311.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375207/normal_5fe0b45571fb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5fdc5d1d53864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418557/normal_5ffd0cecdc963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_6024beb83cf08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_6034ddee009d4.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/lusabifef/aadhar_card_app_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/viwerigin.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/jisafewepepelu.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_off0000da29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA29 5600 bytes
SHA-256: a996686f9c25206d74e55e1d868370bebd467fcd1bb70300ded873ab83382074
font_01_sfnt_off0000ed1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1F 10588 bytes
SHA-256: daf3ba3267db2545234dbf341414dcae3abbda3074aac2ed727253f8187f7cad