Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da3762d061dcaf0…

MALICIOUS

PDF

67.2 KB Created: 2020-12-07 13:09:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 42c3c713f5b8e1b5747e5e734e74ae54 SHA-1: 13b560a9afe23142334f7ae3b9b636556901abd6 SHA-256: 2da3762d061dcaf04fbebc122f7a3cfc9540d383eb2f6c66619c5a7d57d01bcf
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://gettraff.ru/aws?utm_term=kurtzpel+pve+guide'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document structure indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

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://gettraff.ru/aws?utm_term=kurtzpel+pve+guide In 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/64384fb7-87a0-44dc-be05-ed99c0b87dce/46594163451.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/69418514912.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc20e7a9d79364840d4ef3a/1606553211897/47340643466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47ade982-18bf-4037-a619-f6083acadb13/princeton_adult_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a94f0c-b9f6-4cd5-b927-1dcd7334929c/35831952084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa3d1b5f-06c4-44dc-b37a-a08b36966aa5/99885419786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc4aa55-7abd-48b4-af26-9e6455acd533/61716813630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffe2e003-4159-4926-86ac-3b75abc5049d/rigaturad.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13070e2fce462bc8dc846/t/5fccd5c85177ea328cc0d0d5/1607259595301/history_of_christianity_in_south_africa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7803341-c2a1-41e4-b29f-200676e88655/medtronic_lifepak_cr-t_aed_trainer_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/baaghi_film_hd_mein.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b41fa3-1e15-4ee6-8069-8fc1cfd3fc33/do_shape_poems_have_to_rhyme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe68a504-69fd-4cd5-8a56-130b5fedcab6/15327630259.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA5 4816 bytes
SHA-256: 3a3b8be59a1d190fe9273a9e885cc61dfe5b6f83f24c269d4dcad52798324871
font_01_sfnt_off0000dd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2E 10336 bytes
SHA-256: fdc47dc5466cf1d41f8d732184ee5eb69b103ccc865a1b1ec580f4d565180b45

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