Malicious PDF — malware analysis report

Static analysis result for SHA-256 55feade09936833f…

MALICIOUS

PDF

67.2 KB Created: 2020-12-01 17:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 0c7467aca95248faa572c9f9153f827e SHA-1: dbd70637fa40e29868087e99e89563276b4fb85c SHA-256: 55feade09936833fed1ddaac5d6fc2213c169c295810e6dc3a382a0c7ebf6ac2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a popular game, likely to trick users into clicking it. ClamAV and an ML classifier flagged this PDF as malicious, indicating a phishing or trojan payload delivery attempt. No scripts were extracted, but the presence of an external URI suggests a phishing 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://traffnew.ru/wb?keyword=dungeons%20and%20dragons%20basic%20set%20pdf PDF link annotation
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/bexisigusaxeg-sipebazes-sozilonobufe.pdfIn PDF document text
    • https://wawukonuxoni.weebly.com/uploads/1/3/4/0/134095992/27bd6472c2d9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5fbf04fee5793.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/diruwaxivojox.pdfIn PDF document text
    • https://kavafarosodox.weebly.com/uploads/1/3/4/0/134097584/zedilabul-bojeguzibav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/birthday_cake_designs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9eb3398ff75152e2002/t/5fc2780361e25426e18792ce/1606580228396/my_favourite_game_essay.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18b2c68612547ed62b026/t/5fc334b43485235c862f5099/1606628538328/dwarf_names_dnd_female.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/fire_drill_observation_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/five_letter_words_beginning_with_the_letter_h.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/11228320498.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/suropur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3c939bd14ff0dd2ae97c9/t/5fc5687ef8cdb769c6996724/1606772862548/39845604970.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_off0000c726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC726 5428 bytes
SHA-256: ee16a518466172cec1aa418ad6c1fab24bd642b01f28f31d6cdfbc560375556c
font_01_sfnt_off0000d9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AD 11116 bytes
SHA-256: 9b9338f5d925ba26ec694c6244f4f6224ed7a9d8e327fb25a3737991b89cec67

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