Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fd860882e20e60…

MALICIOUS

PDF

70.5 KB Created: 2020-11-20 15:59:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d15e33526e59afe0babe05d2a68e9730 SHA-1: db47f68df454a8225e4993fda186daea42805907 SHA-256: 02fd860882e20e6058713a67896ea8f46111ad503e1ed8bf30bff483f66e4b9b
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://traffmen.ru/123?utm_term=all+in+learning+careers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5f8a30bee6de6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_5f9630f7c11b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f878df7077f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409798/normal_5faa107bc033c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5fb568411d44a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5f8bf92fb947f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5f938cc537e20.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/zonebon/wawetolimuderokilabubu.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/xikojuwibexaburi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e8c864f-2a94-4760-88fe-a39fa39a005a/battlefield_5_the_last_tiger_letters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4dbde86-b139-4350-9539-b4f02cbc3ff5/56072149887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d66efdc-a430-40d1-9535-58bdab28ccfe/dafurosorudaru.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/how_to_convert_scanned_to_word_document_online.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_off0000d905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD905 4956 bytes
SHA-256: 8d6f870544aadc44beb5794ef9f535a63e2690b8990fb1270264ba085f18fff2
font_01_sfnt_off0000e9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F3 10368 bytes
SHA-256: 4305be2e4619a8e9c7c6fcef6b5bc68dcf625251b02a495ff9a0d85fd2fad715

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