Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1322f6a91052ce…

MALICIOUS

PDF

82.0 KB Created: 2021-01-02 15:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6569cd0b89e01f6351fd87014a23a974 SHA-1: 9d5f476e0f774c57c5be883c1529d8286a5b504e SHA-256: da1322f6a91052ce74a1ac2e69817a67f44d9bfcc8a1075d2bdbc9f8bad1d5a6
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=ravishing+rick+rude+quotes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452392/normal_5fe13389d69c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464724/normal_5fa6ce4f4b53e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500878/normal_5fc50f695c1ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387410/normal_5f9bc8c51f1c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415770/normal_5f9ef354c79c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473903/normal_5fad4e097e100.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/jjxljf4/pro_striker_bowling_game_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/poxufape/ejgQiaJ/201088263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5fac4e609b2a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5fefe883c3a7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f8948a58a372.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/c813ccac-6415-4652-a90a-5707718e8ef1/76026815480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9fbf9ed-f308-4f97-ab89-ec078d371192/14298563705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1feafde9-1d33-4e27-924f-6d6d308cb6ae/gentian_violet_for_thrush_on_nipples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69750f6e-18e9-4948-b728-e7b2ce7a565e/61461187530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cfbe32b-0579-4746-83c5-9756910b5b1e/kelefum.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_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off000100d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D4 5428 bytes
SHA-256: f904794ed12a9e5105b7afa92bb93743f62d736896737b838c8e08f432083958
font_02_sfnt_off00011346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11346 11044 bytes
SHA-256: 63efa1c96fe273a8b039e2ecc4523ed893898d00e8ea1d35e30f9b488361a03f

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