Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72f393bcc1468bd…

MALICIOUS

PDF

38.5 KB Created: 2020-11-06 13:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: fc62dffbf34e7678101c23e76f0a3799 SHA-1: a013f79853674051a513b4aaf25d09b9c8e46df3 SHA-256: f72f393bcc1468bdca62242860d96caa5e409dfe61b54963d5d240f39bde349c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://traffset.ru/123?keyword=sign+in+hotmail.com+account PDF link annotation
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/468c2.pdfIn PDF document text
    • https://xisaluzesa.weebly.com/uploads/1/3/4/6/134602292/lopididitug.pdfIn PDF document text
    • https://zodebosamu.weebly.com/uploads/1/3/4/4/134444592/0c46b9e5364d4d.pdfIn PDF document text
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/sagar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bdf763e-2ca9-4421-826a-ffb58c370236/41206570697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a16f933-17a6-4523-bdcf-1a9a592ff578/d_d_5e_throwing_weapons.pdfIn PDF document text
    • https://s3.amazonaws.com/tagorarib/86773557293.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/mitukuviwonusuzotidobom.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/zatopedopokupufivazoveg.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/zupuwibuxatomama.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/9304123372.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_off0000589f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589F 5072 bytes
SHA-256: 5407b5b8aa7d6ed307525d5ff256baa10e7d8abae0fa3c91b5920634ded065c6
font_01_sfnt_off000069bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 10420 bytes
SHA-256: 7223252ac9df2f5321c19af407ecd2b59c9bb21170a1176c59712973c643471c

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