Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7afdc4fed827f06…

MALICIOUS

PDF

41.0 KB Created: 2020-11-06 21:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9f52c8cf9d86e7678deae3c4cb7c5462 SHA-1: 146275101b9bdd0e3f1a5ffabbe2ceb47feda808 SHA-256: c7afdc4fed827f06719f717e41026f88f89d3c73e10e542c3cb29ec238a5f4d7
94 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 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 1.0000

Heuristics 3

  • 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?keyword=warlock+affliction+pvp+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416787/normal_5f9778f700f30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d10bab-ea24-453e-a6c3-b3579e8ed2ca/31624459037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16541ab-7ca2-44a2-bc7e-3cfec32674eb/dubumonubixisajanuf.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/cambridge_english_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/94959954239.pdfIn PDF document text
    • https://davametafa.files.wordpress.com/2020/11/zuronejaxadinepegodabuze.pdfIn PDF document text
    • https://febifobazet.files.wordpress.com/2020/11/gojonezifuxota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d5f76c-db1d-4377-8efb-de87a7057dcb/tap_baseball_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c8d859e-4449-4118-a13c-26710a2f16ae/piponekujalebetofow.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/fiseja.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_off000058ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58CA 5284 bytes
SHA-256: 457eb8457ca0cf255cecc64134032601175c335d18f66078b7f508550237e244
font_01_sfnt_off00006aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEB 13376 bytes
SHA-256: 1b3a7fd562567def0237e9c66f29d9fca6449dc858db04e9d70f1e888d02d408

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