Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7319db85ce382d5…

MALICIOUS

PDF

69.0 KB Created: 2020-12-03 21:45:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c3b8d7394ac94fe9b550b2f5811caa12 SHA-1: de73ad064320a04010ba7a0d625eba84041d93c2 SHA-256: a7319db85ce382d5daafd33113588807431064cb1c99c32264ef8e53aa655a91
96 Risk Score

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://traffnew.ru/strik?utm_term=bob+rivers+christmas+i+am+santa+claus PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448542/normal_5fc858771cf07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387582/normal_5fa2656c6a96d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392651/normal_5fc2f3c31c9a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_5f890dd4cd3e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380858/normal_5fa3825a846df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423699/normal_5fb5fe5c2bbac.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/3c2b7f98-a184-4377-8e31-8e70b69f2ba2/kizis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/320032f3-4306-4b91-90a1-61df00ca7194/top_body_menu_fichier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcc947ae-a0b5-44e1-83e5-6874cdb8744e/71724888333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6a23261-f583-4592-8e89-3acfb026c165/50851672822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28147320-a41b-43fd-a0c4-276ae9028283/60598113477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28dea0e9-7860-405c-8b9b-c6532c241c8e/miguwakuwosojiwobevux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a34de7d9-b81f-4bc7-81f5-91ef90f5c969/rolex_explorer_ii_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/24469018713.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_off0000d013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD013 5288 bytes
SHA-256: 239e469e7e17ca082e7492034428657fc6b816d13e05b70d49d22b80f2bdd01e
font_01_sfnt_off0000e1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1ED 10756 bytes
SHA-256: e290c342d066a9f800d44766b8bd800af8039627b2868fc4f9793f2be2f547dc