Malicious PDF — malware analysis report

Static analysis result for SHA-256 573d651ad50151f1…

MALICIOUS

PDF

65.5 KB Created: 2020-11-23 01:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 07645b35ae0396467a94db54eae0f2d1 SHA-1: 1bd4aed8f7752bd77804c3b052512d403a192674 SHA-256: 573d651ad50151f108a2c97ce3af378c6085609378c214b82e9ecaa13cc34c2c
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://trafftec.ru/123?utm_term=caribou+moss+predators PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372101/normal_5f939bf927098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f8730688b140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f949d5817ebf.pdfIn PDF document text
    • https://zekenegelu.weebly.com/uploads/1/3/4/3/134390475/4dc63c42d70a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388063/normal_5fafb1c45fcf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403537/normal_5fa5c55a757e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_5f9ece5b8c5b8.pdfIn PDF document text
    • https://renibopasuviwi.weebly.com/uploads/1/3/4/3/134305424/ledapobexage-rukul-febof-birobatiju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5fb92df489a6c.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/ee6e993d-c97b-42fc-8628-2e142cf00380/doxoje.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/99065503343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5785e170-8440-4e71-abdb-fcd72ab9a2fe/lamibinibozozimekud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9a4d5a-794c-47f8-836d-590210fbaa99/89923082346.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_off0000c64a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC64A 5120 bytes
SHA-256: 454c5bd67c23eced2a57a8904b07812491c8b8f6712417f9dd843f70f17019a4
font_01_sfnt_off0000d78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78B 9880 bytes
SHA-256: 4109006c686fafbefd8118c0e18527a75836b70302cc6861055336396961f509