Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed23c2854c979afc…

MALICIOUS

PDF

75.7 KB Created: 2021-01-02 03:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 63775becb002daceac79d409e0719574 SHA-1: d686d8f24401666a164358cb303c4ac7190d9804 SHA-256: ed23c2854c979afc1081e620726d4f29635a18a4ccdca1df6548c52387ac5762
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. The embedded URL points to 'traffmen.ru', a known malicious domain, suggesting a phishing or malware distribution attempt. The ClamAV detection further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/123?utm_term=middle+school+debate+march+2020+calendar In PDF document text
    • https://cdn.sqhk.co/kitaparek/TjCjhgg/smart_fortwo_dealer_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/kixituvelil/hHhdxii/wagodomimumebumuzokilak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_5fd2df688ed72.pdfIn PDF document text
    • https://cdn.sqhk.co/mepofazobi/hihjgii/fikimigirawutebizizofij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/937f8ad0-9fcd-484a-908c-d438b71399d7/jepejesawakewojikaxigix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/599f0bc3-028d-4ee4-92ee-e48e0efcd7c8/arisan_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0431d4f-a03d-4db4-afc5-39705f935412/25145424543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75addef-6f05-4173-848d-fa361e4d85c9/17060560127.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/mega_man_4_password_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/52170829818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8213e83-7fb7-448d-8a50-011abf6069a1/17026420995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2336ec31-fef0-4f88-a32f-1355f7138c61/besak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE014 2900 bytes
SHA-256: a28fcc4ba65d8171a55e8b87d646ac5d1dd213f66ab2b0026fd39e5ca5d32d1a
font_01_sfnt_off0000ea56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 5596 bytes
SHA-256: a7e62f50884aa15d9f4ae63a51623350ff6b3de7b422039f565944558cb928e6
font_02_sfnt_off0000fd37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD37 10660 bytes
SHA-256: 03638a8d58bedcb9e3e246b8f5e5de851f7e5adea09e35e503ea553b3edcfbd3

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