Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41c3ed98cf2b324…

MALICIOUS

PDF

63.7 KB Created: 2021-01-13 09:28:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 30fa3c99a14ae9fd9fcba2b08ff9172b SHA-1: 9dc8b87e28339682e49af094384613bcd1ef603b SHA-256: c41c3ed98cf2b324045ccb2723d9a61b8d40700165e8edba6fefc4ddb4a97677
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://gettraff.ru/123?utm_term=make+your+own+sonic+character+female'. This indicates the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/123?utm_term=make+your+own+sonic+character+female In PDF document text
    • https://cdn.sqhk.co/tojebaru/ihq4i0x/tornadoes_today_in_louisiana.pdfIn PDF document text
    • https://site-1173293.mozfiles.com/files/1173293/wiki_ant_hill_garnet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468537/normal_5fb5d529582c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449998/normal_5ff77e5b40834.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/fzEfeii/92774152855.pdfIn PDF document text
    • https://panatomovedo.weebly.com/uploads/1/3/4/6/134688712/kenelavok_povavabidoxari_xigefunupokipim_nujuzen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485591/normal_5fc7ea3223abe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444100/normal_5fe8fdb2776c3.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/ganubifirigevi/lidudulezifuf.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/aaja_nachle_film_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/guide_rod_laser_for_glock_23_gen_4.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_off0000bccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCCD 5384 bytes
SHA-256: 82eeb38be11c19b76bf0a344e67b89095fb00f3284df327c33570c65dcec0eee
font_01_sfnt_off0000cf1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1C 10356 bytes
SHA-256: d3f7cdadbc705a954f024d025772dbf97d4ad8f4679e74f6c8e7266a5bc206a7