Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d16db0e42a7800…

MALICIOUS

PDF

69.3 KB Created: 2020-12-16 04:21:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7d061aee283ceccb6a74c022dc3711ed SHA-1: aa933b27f721339a762164ba6deb6b995ed42a43 SHA-256: 86d16db0e42a78008c39db7cec5cd6f0d70090d86ce37d06f5d864c769d96520
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into downloading a password-protected archive, a common tactic to evade gateway scanning. The embedded URL 'https://trafffi.ru/123?utm_term=esperando+a+godot+personajes' is likely part of this lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=esperando+a+godot+personajes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383132/normal_5fc909dcd459b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_5fb5e5273aa9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496571/normal_5fcbee02cbabd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411229/normal_5f97d927b25b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474997/normal_5fb803b7e2d00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403940/normal_5fb52375bdc5b.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/muvemasoxaji/articles_of_partnership_ph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c40e394b-b722-4558-a06f-5e08dcdbecbb/wcpss_modified_calendar_2020-21.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31017ae3-d1b3-49dd-ad28-34a856911002/xapusodizeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b04e3ee5-8c72-481d-a444-f2eeb375d702/a_raisin_in_the_sun_literary_elements_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/82514512231.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/kewulovo.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/babette_s_feast_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c9306a-a5f5-4417-b701-f44711d4e89e/59839489579.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_off0000d28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28F 5128 bytes
SHA-256: 5c4ab052aa37b74cca6e0b13be19f73177dea61608c23d0ea6d9e563b8b80510
font_01_sfnt_off0000e413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE413 10712 bytes
SHA-256: 254520beb945ffd8c3fd0209aa59b73a2802de311498fe3fbfb3333864794cda

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