Malicious PDF — malware analysis report

Static analysis result for SHA-256 29287c606236ed05…

MALICIOUS

PDF

63.1 KB Created: 2021-01-03 17:30:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e19a2300d2dc774df5ef1d510b67383d SHA-1: 559f2dc2db56d08258269d02c40794459b446274 SHA-256: 29287c606236ed05366c101b3cb26caade7f3a4c93d3eee9371971536dd02d93
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/123?utm_term=the+arrl+handbook+for+radio+communications+2011+pdf'. This URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/123?utm_term=the+arrl+handbook+for+radio+communications+2011+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4498992/normal_5fae1ea91cf99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5fc8bf28e58b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_5f9de298d8663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f8d087a2b7be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_5fa2b04781079.pdfIn PDF document text
    • https://namosupegu.weebly.com/uploads/1/3/4/3/134313644/ratalozenikapobig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388041/normal_5fa8e7e515440.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382960/normal_5fce14dbcff51.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/4552989.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372076/normal_5f90ac325a128.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/9775b05b-d686-4584-a501-3400836f58e9/robin_m_williams_analyzed_american_values.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ed2281-9b79-4141-b1b1-a6f953655a3b/world_war_z_classes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c896470a-dbde-46cd-8a0e-de08471419c7/96248356654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23857abe-47d6-40af-afe8-773dbfb7f45d/peluxoranegolojixolus.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_off0000b889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB889 5872 bytes
SHA-256: 68d63342da12ec1fc7f85c2c3d107b077f68aab70a6b7375bf76548c4da20356
font_01_sfnt_off0000cc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC61 10232 bytes
SHA-256: 3be97536fc565c048e68e6bc6d235d365c22a51dcc94fb95ff6065eeca9ca58a

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