Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e2dfe966779386…

MALICIOUS

PDF

150.1 KB Created: 2020-12-20 19:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc8716c1eaa4a43c046fe90f3b8f17ad SHA-1: 144407a102464c50e90ebef87b6bce4c3d8a839d SHA-256: 94e2dfe966779386d398d7982fbf2548637133e13379da5639da27530c53a8e4
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The embedded URL is disguised as a script title, suggesting a social engineering lure. While no scripts were explicitly extracted, the presence of a malicious URL and the ML classifier's high confidence indicate a high likelihood of malicious intent, likely to redirect the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://cctraff.ru/123?utm_term=midsummer+night%2527s+dream+script+for+middle+school
    • https://mogunugive.weebly.com/uploads/1/3/4/3/134381007/nunewizemulab.pdf
    • https://cdn-cms.f-static.net/uploads/4415080/normal_5f950728bff87.pdf
    • https://cdn-cms.f-static.net/uploads/4487927/normal_5fad6b414d47c.pdf
    • https://cdn-cms.f-static.net/uploads/4374843/normal_5f8a85fdcdc73.pdf
    • https://cdn-cms.f-static.net/uploads/4445879/normal_5fad902ef01ca.pdf
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/8759650.pdf
    • https://static.s123-cdn-static.com/uploads/4366654/normal_5fdf0a6691f91.pdf
    • https://cdn-cms.f-static.net/uploads/4446162/normal_5fd65f29723b7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jejulurowev/fresher_party_anchoring_script_in_marathi.pdf
    • https://s3.amazonaws.com/nowonovege/68672325142.pdf
    • https://s3.amazonaws.com/firudegix/46744682296.pdf
    • https://s3.amazonaws.com/gifojuxaxeva/volo_s_guide_to_monsters_kobold_5e.pdf
    • https://s3.amazonaws.com/leguvefu/glossary_of_art_terms.pdf
    • https://s3.amazonaws.com/baposivarabuj/catecismo_de_la_iglesia_catolica_descargar.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002066f.bin
4e2c3a5de4d6d88e90767653bee05f178e24c8864185cc8b1014ca5e10958633
pdf-font-stream PDF embedded font (sfnt) at offset 0x2066F 5488 bytes
font_01_sfnt_off000218f5.bin
5115ec56c62e57d7929f0b2960fa46f8909d54f491b51b79b3e940383d3f24ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x218F5 10456 bytes
font_02_sfnt_off00023c60.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x23C60 4324 bytes