Malicious PDF — malware analysis report

Static analysis result for SHA-256 59af3da853bcabca…

MALICIOUS

PDF

69.7 KB Created: 2020-11-13 15:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a32642eeca60ea89ef65b7cb376ea1f7 SHA-1: ddab556b52c2a912687208089f297ecabd41ecd4 SHA-256: 59af3da853bcabcac47eb2500851224af9576dd680eb34b4e411235c8c322e44
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=got+the+sunshine+in+my+pocket+lyrics In PDF document text
    • https://cdn-cms.f-static.net/uploads/4485927/normal_5fae2b8d710d5.pdfIn PDF document text
    • https://fosapiluni.weebly.com/uploads/1/3/4/6/134653401/875934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377678/normal_5f9c9fccc405f.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/495158.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/leguvefu/66827346575.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/79543501196.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/end_slavery_now_shopping_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee567af-9167-4327-8ca8-ae881def6143/raraledalenap.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/39985428611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa77ed5-73ea-4eb7-b144-82508acb0f3c/gamezuzilizalexuvoforiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5409aa7b-4504-445e-85ae-f611ed7fd3ee/87502443576.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/legogawizubamomepufokife.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/pokemon_bot_discord_bot.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/best_law_of_attraction_books.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_off0000c808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC808 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off0000d296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD296 5160 bytes
SHA-256: 1f9f8e658a25973afbbb75758d9cb5fe60f3513fc71b09943d8fb0e15c8e11e6
font_02_sfnt_off0000e409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE409 10544 bytes
SHA-256: 7402e35b58aacf5c49aa601692c7e05894b366bb98c479f84015d56ac929308f

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