Malicious PDF — malware analysis report

Static analysis result for SHA-256 415e9164d57666ee…

MALICIOUS

PDF

75.6 KB Created: 2021-01-13 02:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 942ccbdbad9d9cee1d071392c2f808ff SHA-1: e9cd726555c0aa4f7f45e1fa91eb8b32950a91c7 SHA-256: 415e9164d57666eedb5f423f071ba69fd9715bd90a20e1a689c638fa6e22bb45
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ggtraff.ru/123?utm_term=nueva+tabla+periodica+2019+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The ML classifier and ClamAV detection further support the malicious nature of this PDF, likely used as a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=nueva+tabla+periodica+2019+pdf
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5fd7a0a14de5b.pdf
    • https://cdn-cms.f-static.net/uploads/4471688/normal_5fe9c81e2fd6c.pdf
    • https://cdn.sqhk.co/lodikorep/ii8jbhh/telecharger_rtvc_haiti_pour_pc.pdf
    • https://cdn.sqhk.co/nowovadizeb/gciche9/nelexeg.pdf
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f876456b923b.pdf
    • https://cdn.sqhk.co/xubupigegi/jhgvjjP/cartoon_wars_part_1.pdf
    • https://cdn.sqhk.co/fumamimed/Jhgicib/homeschooling_kindergarten_washington_state.pdf
    • https://static.s123-cdn-static.com/uploads/4387566/normal_5ff2867c56b0a.pdf
    • https://cdn-cms.f-static.net/uploads/4387233/normal_5f8f423a1613c.pdf
    • https://cdn-cms.f-static.net/uploads/4405419/normal_5fa7d6b5d4f18.pdf
    • https://cdn.sqhk.co/sovokeduseb/JvZhgFi/latest_ringtone_2020mp3.pdf
    • https://site-1168145.mozfiles.com/files/1168145/29699900504.pdf
    • https://cdn.sqhk.co/pajerelo/x1ghhhi/zorevowijexene.pdf
    • https://static.s123-cdn-static.com/uploads/4461497/normal_5febc14edbcf9.pdf
    • https://site-1176393.mozfiles.com/files/1176393/13888802470.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea31.bin
a750a2d2782346f9da1be6ece94fc8f8d1d7eba5219929fd4e95a5c9086321d0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA31 5620 bytes
font_01_sfnt_off0000fd71.bin
4ab533f6be704b0198ef8f581056fee4a3a3073ca0d06a797a91c34250bfb36f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD71 11032 bytes