Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ab119c943aba9c…

MALICIOUS

PDF

69.1 KB Created: 2020-11-09 19:06:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1b732788f222a457bd4356a8940ead0e SHA-1: d1ba4c3d6d4eeb98b406d4144ac4bf44d6735fe0 SHA-256: 09ab119c943aba9c417e30ae8c43b1020dfa335db5c52cbe0cf0c7b7dd662649
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/strik?keyword=2002+mercedes+s600+repair+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_5f8e40e8e265c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372681/normal_5f8b2e3521d7c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/baldur_s_gate_npc_guide_steam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/703cbc7d-776b-4885-876b-82aa2a8340d1/67525751603.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/boziko.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/zasexene.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/rojuniruwutifofoxolot.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/muscle_spasms_meaning_in_chinese.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/towokemuvuxagexajomatusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2793827-e5b8-454a-872c-57b4c9a17c84/gezitesuwinijapapol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a580161-9ffd-4111-88c7-a6a84ff8ae2e/87534174379.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/92812967452.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/ullr_guide_smite.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_off0000d0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C5 5632 bytes
SHA-256: 9499cfeef1a9336fd633607f7335b55c6d2235a3c39a9db5b1cb0818149450a5
font_01_sfnt_off0000e3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D1 10524 bytes
SHA-256: c0678c5bbe8b74ed61b11c35cb228e2891bf45c01fa0653f7daf5fa646df9bc5

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