Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d4475d1550c634…

MALICIOUS

PDF

70.0 KB Created: 2020-11-24 20:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ced747bd460494e47f3a7f1f7a209040 SHA-1: 54e994b09cbba22790f81f43cd339495c64eb067 SHA-256: 64d4475d1550c6340bb5b1da229dcb04d5f24c271fb31fd083d47e7538856270
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site for further malicious activity, such as phishing or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/strik?utm_term=journalists+guide+to+guns
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5f8d31c5e0fb7.pdf
    • https://cdn-cms.f-static.net/uploads/4391015/normal_5fa884978c285.pdf
    • https://cdn-cms.f-static.net/uploads/4390660/normal_5f90920a8283e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3dea54da-55aa-42ea-8ad4-7e668a0ff547/kovufexaxipu.pdf
    • https://s3.amazonaws.com/pidufozu/lobesadavosi.pdf
    • https://uploads.strikinglycdn.com/files/503416e6-db3f-4baf-922f-5a626ab99eef/cnn_spin_off_crossword_clue.pdf
    • https://s3.amazonaws.com/padadutiseni/sapuzogudamovexakivevalez.pdf
    • https://s3.amazonaws.com/zunewidimem/21192249498.pdf
    • https://s3.amazonaws.com/paropabaru/7036559343.pdf
    • https://s3.amazonaws.com/zurovajij/62466431363.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_off0000d435.bin
d84d62cf37ba3392a349fa06defd559e488c47219166240a1e2f3217f31372d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD435 4984 bytes
font_01_sfnt_off0000e52f.bin
b776dceb50b48a7c7756650c2dfb4bf4c9b57e4f4c99cdc8426e0e4d44b31f8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE52F 10792 bytes

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