Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46281066e2afdb6…

MALICIOUS

PDF

101.1 KB Created: 2021-07-16 07:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 72041fa8dbd9aac4c384402f755fc611 SHA-1: 40b8013e3ad5a78daea2fc7f04bb2c8d4c692943 SHA-256: f46281066e2afdb6185c11439f747162226eefd736ae412cee7984b965866c67
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9881

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=the+looking+glass+war+1970 PDF link annotation
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edb5de262c1d4011371b79/1626191326986/pegidi.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7aed325441e1b3783a9ce/1625796307224/nigatijibaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec795fbdd82073f6fe0021/1626110303909/5_minute_personality_test.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efce4639c5d52effb4854d/1626328646902/22305888639.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee9080a005482cc15acf82/1626247296621/atypical_intraductal_papilloma.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edab1c8525735ba0d2e380/1626188572952/24657147294.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0e024e7c782239584e050/1626398756086/times_table_practice_worksheets.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e960fa83ae0c49023aef62/1625907450109/how_to_cut_your_ball_hair.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edc9d580caa629c1d9fab4/1626196437406/senate_house_of_assembly.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CAB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000144bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144BD 16984 bytes
SHA-256: 0bf15dbfa0763f4eb9d60c90718387284a12f0c4b76f693fb2231a0030449f86
font_02_sfnt_off00016f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F5E 10820 bytes
SHA-256: 7eec714d03d9aed63e04949ba283540d44eea3a7486b627ef461370c2a9c4f71

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