Malicious PDF — malware analysis report

Static analysis result for SHA-256 5893ab4cf1581bf4…

MALICIOUS

PDF

68.0 KB Created: 2021-01-02 15:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f76c1b586dde65ab1634727667dfb08b SHA-1: 20dc4abfdd6075812f1a82a1883c5f088185ff89 SHA-256: 5893ab4cf1581bf4411182f90e36d0f5ce7ae2c618b84e849530a61e817e0cda
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffnew.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, references a book title, suggesting a social engineering lure.

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
  • 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/123?utm_term=let+the+dead+bury+the+dead+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5f8fafbdd3530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd83a9caa9e5.pdfIn PDF document text
    • https://wadexusi.weebly.com/uploads/1/3/4/4/134440973/zixirudelonezafivebo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392195/normal_5fd0552c4f2ac.pdfIn PDF document text
    • https://barobinamad.weebly.com/uploads/1/3/4/7/134756413/4318aa.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/Qhijjm7/love_quotes_for_him_tumblr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_5fd11ad22167e.pdfIn PDF document text
    • https://cdn.sqhk.co/fadanade/J0jfhaD/28328507391.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jivagajamav/19658454619.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/linivirobegojege.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/vutotemowa.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_off0000c1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1E6 4680 bytes
SHA-256: 57d375e732f6e4b69e2234c657edd9595ce0df47b48186a4e3f330107e43f20f
font_01_sfnt_off0000d1e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E7 10348 bytes
SHA-256: 6a81cc97dc34c6e90c33bef97172403c4c2533daa8fc1ff9a2d9c6c7a32412a1
font_02_sfnt_off0000f564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF564 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e