Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad9633d85f83542…

MALICIOUS

PDF

43.6 KB Created: 2020-10-29 04:35:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e04b052b376fe8fdb80234c67a0e28ee SHA-1: 1d3d83871c1e64a599ddbcc539e8e2c59a0fd1f1 SHA-256: 7ad9633d85f8354250e45a68cc9e9b240c8f26eeaf89dcd0f7a9f6021d2f8034
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, https://ttraff.com/123?keyword=able+planet+sh190+review, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body itself is heavily obfuscated and contains the same malicious URL.

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://ttraff.com/123?keyword=able+planet+sh190+review
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5f8f09412d1b2.pdf
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8749a7cb032.pdf
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f8dd964847a8.pdf
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87059cbff7a.pdf
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8862c730058.pdf
    • https://cdn-cms.f-static.net/uploads/4407331/normal_5f945d10ad4c2.pdf
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5f89dd5b7e2c7.pdf
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5f9090e36ed9b.pdf
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87524b1d707.pdf
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f8d24a309b4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/varoximu/10357602650.pdf
    • https://s3.amazonaws.com/gumegulaxi/public_holiday_calendar_2017_malaysia.pdf
    • https://uploads.strikinglycdn.com/files/74913618-1377-4e03-8ed4-9a770f30e1cf/57128458889.pdf
    • https://s3.amazonaws.com/setaxilitozuko/semebotuxejew.pdf
    • https://s3.amazonaws.com/susopuzupure/baxumojevin.pdf
    • https://uploads.strikinglycdn.com/files/8c0f39cd-d03f-4e4f-b25d-a593b965a81a/givoxasevi.pdf
    • https://s3.amazonaws.com/kavitokolezub/padineteludinuzukarefito.pdf
    • https://uploads.strikinglycdn.com/files/a1408ec9-3227-497e-b8c1-8b1516302183/39872881692.pdf
    • https://s3.amazonaws.com/henghuili-files/brain_gym_hook_up.pdf
    • https://uploads.strikinglycdn.com/files/6649aadc-62e6-4127-8cb0-688fc7536798/mimowuma.pdf
    • https://s3.amazonaws.com/farezelof/atmega328_datasheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a69.bin
367231ac5f760cfb628126a5aacb0f4f83b4c9122fee6bd93e917d5c3bfa4a55
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A69 5540 bytes
font_01_sfnt_off00007d43.bin
a4f6556fde53378c0a34bc3a6bedc82e071f39a9b70182b0e97569bfe9296568
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D43 10492 bytes