Malicious PDF — malware analysis report

Static analysis result for SHA-256 018cf14ff27f7cd8…

MALICIOUS

PDF

76.8 KB Created: 2020-11-19 07:59:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 247be79e370512db2c0c7519be21d1c8 SHA-1: 945841cb0be37c710d3ccce2974510e84072ffe9 SHA-256: 018cf14ff27f7cd851ebe4e0633225f977b32981be117d84a0d0d6f0e3129453
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'traffking.ru', which is highly suspicious. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload. The document body contains garbled text, but the presence of 'Timex marathon manual' and the authoring application details suggest a potential lure.

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
  • 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/123?utm_term=timex+marathon+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f9cc16142263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5fa26254e4b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422145/normal_5f981a94a985b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f8db850b21fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418558/normal_5faeceeeabe77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f9c30b4ba7c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5f8cfe347ff84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_5fa8780793467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419640/normal_5f977372e3e15.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/fomaralunex/15199354816.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/615676057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef77966d-df54-4f09-b708-61ef0d783ee1/rukafoziwojolamovonusujep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8360486-da66-47b4-8edd-1a273142693c/71955724413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f89971-dd34-469c-a902-5ed23824b25c/968214625.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/areas_of_knowledge_tok_ib.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/luduw.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_off0000e255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE255 4644 bytes
SHA-256: 0c86f4cba3ce96bfe8985a234bcea78157de92a462b1eb4ecee13198bdfb9093
font_01_sfnt_off0000f1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 10916 bytes
SHA-256: 343ecbc26f3c8f02b0b5098c248656c896756569ee5b6c6b2202733da056741f
font_02_sfnt_off00011683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11683 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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