Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8d8b201039912f…

MALICIOUS

PDF

79.8 KB Created: 2021-01-13 19:22:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 5f649407635728cf93e7dfd62dec0f2e SHA-1: edd0be630ffb5355576368fdb73b873248bdafbf SHA-256: 0c8d8b201039912fbcfce5e91f56e170e0d4c5e367fb233702ae53085ff4a5f7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL 'https://traffnew.ru/aws?utm_term=chips+in+spanish+formal' is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=chips+in+spanish+formal PDF link annotation
    • https://site-1171417.mozfiles.com/files/1171417/playground_slide_cover.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/hggemgj/o_que_e_um_touchdown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470677/normal_5faffe8dd94ab.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/rBlgcsX/taxekizupogopinotivi.pdfIn PDF document text
    • https://site-1168276.mozfiles.com/files/1168276/zusazuzosejuzefut.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/fjhimig/59780803984.pdfIn PDF document text
    • https://cdn.sqhk.co/rasufizo/FjcNwhb/superhero_build_battle_server.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/aqjhhi6/nebividemeverumul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481422/normal_5fd222cc3a6c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417049/normal_5fa80409e0b41.pdfIn PDF document text
    • https://site-1176393.mozfiles.com/files/1176393/w3schools_javascript_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/egiigpS/rolling_stones_gimme_shelter_video.pdfIn PDF document text
    • https://cdn.sqhk.co/pitadewedobu/LjftEpG/doctor_of_occupational_therapy_salary_by_state.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5fb3054f04940.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/mujevubutukoxu/how_to_plot_a_tangent_line_in_mathematica.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84C 4756 bytes
SHA-256: add45387196bbe3e527c0e5d1d190fa4d83f4b5f7a4a68956aad73e4640482c4
font_01_sfnt_off0000e825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE825 11948 bytes
SHA-256: d54ae72578d91b83f035ef9dd4b18f0f018725973def04a0feb8484ed142842e
font_02_sfnt_off00010f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F50 16060 bytes
SHA-256: 2cca29575edef7a9880cf400a7847cc5df22ba1ee7edc19c7b9bafe603f6c979
font_03_sfnt_off000123e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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