Malicious PDF — malware analysis report

Static analysis result for SHA-256 73195a0dd40fd7a1…

MALICIOUS

PDF

75.3 KB Created: 2020-12-19 11:17:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1d29258667d4616040f1e27189d45731 SHA-1: 0c297240e0c0ca9a4505280aa1d65facbf8fafa1 SHA-256: 73195a0dd40fd7a1ab025056726383df526f284915537b3faaae0ad2588e025b
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/strik?utm_term=tokyo+ghoul+anteiku+owner PDF link annotation
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/9411902.pdfIn PDF document text
    • https://nuxirudeduw.weebly.com/uploads/1/3/4/4/134442083/86157a96.pdfIn PDF document text
    • https://vutibije.weebly.com/uploads/1/3/4/6/134672754/247888.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://static1.squarespace.com/static/5fc6e22dabffab30daa89197/t/5fd224ffd97b572b89e2f787/1607607551958/examples_of_likert_scale_survey_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/lajovutul.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/polixububuroboxawumovez.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3d5beaf37e3b6467362b/1606303067619/mcdonalds_wifi_connection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ba320d-88bf-41be-8a9c-a0195d43b3db/bowarikunixetowataxu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57982a879396864270a01/t/5fc5fcbb3c02f22b9dda9a9a/1606810812431/fishing_leveling_guide_f2p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13bb413b-c865-4519-abaf-ec01f498c91e/9818129728.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/5667860837.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000d061.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD061 4188 bytes
SHA-256: d50261a60be4ee2b62cd6716f7084912e4dcbadbf697d4ec877ba6592fdc6571
font_01_sfnt_off0000df23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF23 4856 bytes
SHA-256: b2866bfb0f34814d1ea10476ce9228b7607f27aaa0509eec735c29639cec0d22
font_02_sfnt_off0000efb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB8 10352 bytes
SHA-256: 12869922254ab4ff6f66765adabd444110b22f701e359a4b9c2d024820b98892
font_03_sfnt_off00011264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11264 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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