Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d6272091358c36…

MALICIOUS

PDF

74.4 KB Created: 2021-01-06 04:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0c37a5c5faf8f321c038d28b0adbf479 SHA-1: 4d943dbfb8c23a04a11202ef0e3ecf80f3bdbf3a SHA-256: 41d6272091358c363837f4ddbf64c298995399b02d1c27fc2c56a2083b36eddd
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffset.ru', which is likely a malicious domain used for phishing or malware delivery. The document body, though heavily obfuscated, contains text that appears to be a lure related to an 'infamous first light trophy guide'. No scripts were extracted, but the presence of external URIs and the malware classification strongly suggest a phishing or malware distribution attempt.

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://traffset.ru/aws?utm_term=infamous+first+light+trophy+guide PDF link annotation
    • https://puzesijokivokef.weebly.com/uploads/1/3/4/3/134312217/52ab5d4.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/nekapexevuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_5fe402b836317.pdfIn PDF document text
    • https://garaxawodipadi.weebly.com/uploads/1/3/4/5/134595678/a5cfdb040efe.pdfIn PDF document text
    • https://bumatiwake.weebly.com/uploads/1/3/4/0/134096698/6661167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413231/normal_5f941dd193289.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/kewakuko/raster_vector_images.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/796178227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0280bd0-2cba-43e8-83c5-cf1ed06e330e/at_o_ltimo_homem_filme_completo_dublado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb2ae0d-c85c-4d98-9633-ccc907292077/nunapakoxijepowur.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/octopus_apk_mod_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/65313439341.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/html_css_templates_free_travel.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/jurnal_klasifikasi_azolla_microphylla.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/drunken_sailor_sheet_music_recorder.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE08 5492 bytes
SHA-256: 4b0f101428a9c6428cb75313073f18554685665e9902f0e8946dabcf53faf86f
font_01_sfnt_off0000e095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 10728 bytes
SHA-256: 1c97dee690c0140866c6d18e065580f2a93fa23824b6ae140620f1f30dbc2e7a
font_02_sfnt_off0001055f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055F 16632 bytes
SHA-256: d6aeca2d71d065aeba00d03c50d672d3ba05f186ce264dc70760bb3990d11dd0

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