Malicious PDF — malware analysis report

Static analysis result for SHA-256 8168c653a0f64bdb…

MALICIOUS

PDF

85.4 KB Created: 2020-11-13 00:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e205320e1685e8133035e9325489841d SHA-1: db318f46b9a79f2e015c7928a000498be98063c6 SHA-256: 8168c653a0f64bdb1509a227551e7250d774364ec0c750add245369dc8ec3390
154 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 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/123?utm_term=wow+classic+warlock+speed+leveling+guide In PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/wigexina.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/memul/bautagebuch_vorlage.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/software_technical_documentation_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/062c4799-c533-40ed-8cbe-5e4bcb47c43f/bdo_warrior_skill_add_on_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49526f9-108f-4296-bef4-870e841375c8/33959282649.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/23639736667.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/57603257199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec6f96e-3585-41f2-bec7-78f9f44f74cc/89787433052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c5a428-7abc-4be2-86f6-7e128e296aee/71290803968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9582e8fe-09a2-4fe9-b93a-cd7cae184de5/44709199938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4f6bbf5-ff7b-484b-af13-e7212340c998/75687363302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea14c961-f861-4805-8536-aaf9a28718ca/xaforimigabusa.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_off00010d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3A 5468 bytes
SHA-256: 857820048083b82024b3029e556d6f578d4921706d7a9ef37c2027a93bb8bce2
font_01_sfnt_off00012009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12009 11904 bytes
SHA-256: 784fcca93df574116651f0aa8a8c2ad21aaa6eb2a0c14557b570473c38311c8b