Malicious PDF — malware analysis report

Static analysis result for SHA-256 508c1ee6309d63e9…

MALICIOUS

PDF

72.5 KB Created: 2021-03-02 17:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 16706395930e86850f1db5b3f470d372 SHA-1: 39a74d4f3ff78dc0e0c2479b7236e9b6a88c25c9 SHA-256: 508c1ee6309d63e97c6f74b4240d5d2363fa7cf7e795ed677c190ccdc322a1b2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=verbs+that+start+with+the+letter+v PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393635/normal_5fd8e29a745a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393186/normal_602f93e97e4be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368497/normal_5fe1fcdf13c36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474211/normal_5fefc20b27094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480590/normal_5fdb0b10e0618.pdfIn PDF document text
    • http://misirabul.22web.org/how_to_connect_turtle_beach_bluetooth_headphones_to_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5fd76d6527541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427104/normal_6020958d8a3c8.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/mimuzalupi1trhe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sifebina.epizy.com/17390792908.pdfIn PDF document text
    • http://peworesafasar.epizy.com/free_indesign_invitation_templates.pdfIn PDF document text
    • http://numaxap.epizy.com/no_more_mr_nice_guy_robert_glover_reddit.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_off0000e0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D6 5032 bytes
SHA-256: cb30a7c8c37fea6ff3302bc80b3d08e512b518a6d6dff69f67d698ff4226c6a9
font_01_sfnt_off0000f204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF204 10432 bytes
SHA-256: 7fdd2230edcbb8aa508685e28ea91ff71829c742ba981219061ce28bb1795ca6