Malicious PDF — malware analysis report

Static analysis result for SHA-256 e65e1b7e78b2fea9…

MALICIOUS

PDF

68.4 KB Created: 2021-01-03 07:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 972e75fb2ccd1f17577a463aba039368 SHA-1: 36ed6ec737a42661b3fb0111fb0f889a1bc0a515 SHA-256: e65e1b7e78b2fea925a8b95d4c67dfe5d1ddf648e7268f3a4ce8d1c4715a5b5f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to 'traffking.ru', which is highly suspicious and indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection by security tools suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?utm_term=romeo+and+juliet+act+1+packet+answers PDF link annotation
    • https://cdn.sqhk.co/gudopokobipa/giogTPd/joker_movie_music_controversy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459636/normal_5fc70d71c4eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_5fd3372f4d1c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450424/normal_5fcff64f1c0af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f87623810069.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/6f968d1e-7e2c-414c-b575-9c2631ff1ab5/benofaximugajula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd5e6a66-bd3d-4c16-ba7a-ece9aec7e539/valueerror_max_must_be_larger_than.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18b5a98e-ab0a-461d-b024-7b4c9c1aae33/31988903678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d553d0e6-7e65-46f2-be60-f12ed457ea0a/dragon_mania_legends_wiki_habitats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf7223b-e294-423a-a5fc-43266cbf8179/86566455948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb4c41e-c957-4f7f-b21f-d3e9093d8dfd/lalurorikekabidake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02d3e915-5305-4d82-a1ef-af00f987e618/10237983815.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_off0000cea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA2 5512 bytes
SHA-256: 52016378e79fbbbb3b30b5ce2a23b46f3e839fdbda2921c38dd6cf775ecbad00
font_01_sfnt_off0000e168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE168 10392 bytes
SHA-256: f55096a9718028fd54479a4a75456928cbd72c20af3abee2eedd633a26ce1b40