Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cce7353155519f…

MALICIOUS

PDF

46.1 KB Created: 2020-11-06 21:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c8bdd7720ed2a3764a9a46e45a40d656 SHA-1: d5545e93126c7cf06ea464e75a9bcd1b4fa498e0 SHA-256: d0cce7353155519fe962cb55d9d2574a758bd1e4e94eb5015b7193f8c28b0741
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=merge+dragons+challenge+20 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f86f436280d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_5f8a9401895f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379217/normal_5f8e8a5f470df.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/xabalaru/nanusijasus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7a7038-da5b-4e85-8bf0-9a1d7d807f74/georgia_wic_formula_algorithm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d03ea6-8eda-4fa9-8673-6fd672f479d8/barony_ninja_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77912c9-95d4-42d3-8ad2-19e9783b7d8d/topujikakakubevi.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/led_daytime_running_lights_flicker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba4da4b2-fc10-471e-a5e9-8ca6123506df/mumibavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cbb2723-0e8a-4fc3-87eb-2c4c809f4bf6/97052214890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1899c798-1fe5-4042-8af8-9dbd330eeaa8/model_3_crash.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d1e7232-49f5-41c8-b538-749dde265eef/30020075135.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_off00005fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB8 5480 bytes
SHA-256: 84a9bc0b950ec48d785763245d33f4e71445f2bdfb942a218df5a48e11e05311
font_01_sfnt_off00007267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7267 10304 bytes
SHA-256: cac22c0f0d6e3ee1198bae3a20ae2d1ea641fed9b50821ce2a03de665f11758e
font_02_sfnt_off000095c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C6 16312 bytes
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1

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