Malicious PDF — malware analysis report

Static analysis result for SHA-256 358682d5fcc001f1…

MALICIOUS

PDF

63.4 KB Created: 2020-11-14 00:30:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 26199daaaba0822b2538f21a95317c66 SHA-1: be77ced781605f55e944e154c64bf8e51cac6713 SHA-256: 358682d5fcc001f16100b72e98ca8d6d050d4554e198526a4daf53eaca9dd565
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=muppet+classic+theater'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. 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=muppet+classic+theater In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5f9234cdd9a03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_5f99a0fea44bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449205/normal_5faf0513dadce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f9e6db19d98d.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/9df71023-e006-4a70-a10b-e489d4ec8493/vowowagakefoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/935291c1-2525-4bc4-a62c-23d4e5231bef/white_salmon_wa_weather_averages.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/jdsu_hst-3000c_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/6633321745.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/obc_reservation_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4a5dfae-7638-4f2c-9f81-a37fa2ec79d4/ferukisaboleninubibew.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/92324888230.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/used_hyundai_genesis_coupe_manual_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/kone_escalators_and_autowalks_planning_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c874e0f-2617-4f6e-b6cd-5bc7869adaa1/gemefigokalevo.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_off0000bd40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD40 5024 bytes
SHA-256: bc5fe84003a4e06bceabfa4d4582344e650027257dcfb6bb58aa6964d821a5cd
font_01_sfnt_off0000ce5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5A 10140 bytes
SHA-256: 529229a41212d9deb962412d7c911583b87b0539b92f996b5c6e9d7597334f4a

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