Malicious PDF — malware analysis report

Static analysis result for SHA-256 763514f6cc11dc42…

MALICIOUS

PDF

71.2 KB Created: 2020-12-01 22:52:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67995e7bbc17fd30872cd4520cb25fdb SHA-1: 5a24bdffaa166893d9a7d566d359b26512039cab SHA-256: 763514f6cc11dc42fb780445db2ed511f8e75c22f325dafde19bf854d48541d4
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI pointing to a suspicious domain, traffset.ru. ML and ClamAV heuristics strongly indicate maliciousness, classifying it as a phishing or trojan PDF. The document body is heavily obfuscated, but the presence of the external URI is the primary indicator of malicious intent, likely to redirect the user to a phishing site or download a secondary payload.

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://traffset.ru/123?utm_term=kaplan+physics+mcat+pdf
    • https://cdn-cms.f-static.net/uploads/4420441/normal_5fa742a3d8638.pdf
    • https://cdn-cms.f-static.net/uploads/4426543/normal_5f9e9ed7d235d.pdf
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5fa168629bd19.pdf
    • https://static.s123-cdn-static.com/uploads/4469827/normal_5fc473956bc64.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gomakobez/drunkard_sekiro_guide.pdf
    • https://s3.amazonaws.com/tapexiw/infosys_sustainability_report_2019.pdf
    • https://s3.amazonaws.com/mavixu/pillow_thoughts_download.pdf
    • https://uploads.strikinglycdn.com/files/bf100a51-9c28-4dfe-9aef-a7e502022994/non_defining_relative_clauses_ejemplos.pdf
    • https://uploads.strikinglycdn.com/files/0ee8c869-c572-4658-baf8-a4b51a44dfa1/wagoku.pdf
    • https://uploads.strikinglycdn.com/files/f54174a8-90b3-4d1f-a29c-a5dee07190c8/21373645572.pdf
    • https://static1.squarespace.com/static/5fc28fbed26ff1194f7e5808/t/5fc3c4e1fa04221c719327ca/1606665441888/european_rivers_worksheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e5.bin
6b366c775456817f2513641676632a3d607ff072473e6564028dc3db6c3ce427		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E5 5372 bytes
font_01_sfnt_off0000ec16.bin
62a3648b1b32a0c902069fd1e1bce9a1b8dfbc0bf05e3817b9c1fd23e7a7cfff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC16 10708 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.