Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a697e7cd697a10…

MALICIOUS

PDF

69.6 KB Created: 2020-11-09 22:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0a4268582e7cf0661e1642c116fc7b79 SHA-1: 162b710d2f7459ec1523e6078738b2d8367ba81a SHA-256: d4a697e7cd697a10d6dff44741a1d166f17498fc1a723fd133117b563ec148c3
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 'traffking.ru'. This URL is likely used to redirect the user to a malicious site for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to deliver a payload or phish credentials.

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://traffking.ru/aws?keyword=thunder+cannon+5e+artificer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4471710/normal_5fa586f250001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f89573fbdd01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5f92d37f22df0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5fa5b9c3b81b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393772/normal_5fa3491cb3a8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f88326b0c299.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bdedef6d-6965-4baf-af41-c0a16cb3543a/kaxeroduxagiperowanupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/855b8030-0ef1-4134-a309-a3033352949b/lesejizawubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ce97d0-fb4a-4962-8d77-dd0e4035e3c2/pathfinder_flip_mat_classics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11edd61d-d588-4fae-8b58-e34c216f6f38/92003047016.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/cyclotron_and_betatron.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/ruxidipup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1437f1d-23e5-4d19-b855-e0a4bf32e547/61717496153.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_off0000c78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78E 4856 bytes
SHA-256: 8a70daeb72a1691757fd5fa8e5220c2e3b359e9a996d5793eadd9e8ff12de84a
font_01_sfnt_off0000d7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FD 10552 bytes
SHA-256: f4866d93329d2f80c6f2b39f138becad45becb5f89ce7d0e40f4381837b04196
font_02_sfnt_off0000fb9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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