Malicious PDF — malware analysis report

Static analysis result for SHA-256 907cd448ee606847…

MALICIOUS

PDF

71.5 KB Created: 2020-11-18 05:16:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d48e726eda2d309d1263addc651459f SHA-1: d657a0d46abbed5e42d26157feb51a573c2b93e9 SHA-256: 907cd448ee606847e6a042b9eccb754f50372ee9d63731b59d4f321aef11bb24
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://cctraff.ru/123?utm_term=wwe+road+dogg+finisher'. The ML classifier also flagged this PDF with a high probability of being malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'wwe road dogg finisher', suggesting a phishing or social engineering attempt.

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=wwe+road+dogg+finisher
    • https://cdn-cms.f-static.net/uploads/4387230/normal_5f9c658e94037.pdf
    • https://cdn-cms.f-static.net/uploads/4455645/normal_5fb27dfc1983a.pdf
    • https://cdn-cms.f-static.net/uploads/4427523/normal_5fa19146625c3.pdf
    • https://cdn-cms.f-static.net/uploads/4368782/normal_5f918a985b848.pdf
    • https://cdn-cms.f-static.net/uploads/4458634/normal_5faf42bd0f10a.pdf
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f89ced30aae3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/61cf730a-d1f9-4dae-a28a-a1cf77ea2a4b/77927776606.pdf
    • https://uploads.strikinglycdn.com/files/d9b61263-1eda-45b4-9995-ed2c18cf5b0c/mafia_1_kurtlar_vadisi.pdf
    • https://s3.amazonaws.com/remeranexe/gavoz.pdf
    • https://s3.amazonaws.com/zirojopemup/medical_applications_of_biotechnology.pdf
    • https://uploads.strikinglycdn.com/files/18d4f7d1-f84f-4fa9-93b9-cc1036004ed3/pool_geometry_2.pdf
    • https://s3.amazonaws.com/tawosutosuxi/linear_regression_model_formula.pdf
    • https://uploads.strikinglycdn.com/files/8db64e37-145e-40a3-88a1-c8215eabeca8/patrones_basicos_de_movimiento_en_educacion_fisica.pdf
    • https://uploads.strikinglycdn.com/files/9576c9cb-4d2a-4f61-a54e-8281639aec40/tewodilakofesiluzagebida.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc2b.bin
74e4a6cf1bca9c3c1cd3e6b01411721a3b12e13755f620d2d7ee4b935561469f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2B 5244 bytes
font_01_sfnt_off0000ee1b.bin
ceea204b3accc9b82ab69e08efe1f74f54e384078148df835f5b94d95dc91809
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1B 10364 bytes