Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62db08bb0e9f9c3…

MALICIOUS

PDF

40.6 KB Created: 2020-11-07 10:03:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fd5e9fc178424b4628feccc9312c5f4c SHA-1: c9bfd38a1a4c308a0ded3d0766272df2b470ebfa SHA-256: b62db08bb0e9f9c3a39db9886ba92bf39ad7d77fe7cba7d3294e44a58e3f079d
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://gettraff.ru/123?keyword=exposition+of+a+story+meaning, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that this is a phishing or redirection attempt.

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://gettraff.ru/123?keyword=exposition+of+a+story+meaning In PDF document text
    • https://bofufawikifof.weebly.com/uploads/1/3/4/2/134235483/mobugoxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f89c07df2662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420250/normal_5f9a6d38f0ecc.pdfIn PDF document text
    • https://fetibafavi.weebly.com/uploads/1/3/0/7/130776688/jitepum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408991/normal_5f949b41ac0b3.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/c15a31bc-d403-4246-9219-2d9877bda55c/romeo_and_juliet_movie_comparison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f3064eb-7d2e-426b-be2d-c015c3f7de50/kumaxesa.pdfIn PDF document text
    • https://mivepir.files.wordpress.com/2020/11/5079203302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df814e9e-a0f6-429e-af94-f916b7b90827/wusatevepad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb63799c-f482-4f31-9159-215c8f01c73f/2266803467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e62794c-0caa-4aa4-8f04-60d159afc7ff/lalitha_sahasranamam_meaning_in_telugu_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2387ab-024a-4178-b039-2a8b4a0c218a/forced_womanhood_magazine.pdfIn PDF document text
    • https://liwotorur.files.wordpress.com/2020/11/nememig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d9247d-1aec-4db3-a2e3-0e74429d60d0/blaze_guide_hots.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_off0000607c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 5316 bytes
SHA-256: da705ae8c9ca8ea17f36ff7b52ef92a2402c9ffc834c8a52f5170c88d5af3ea2
font_01_sfnt_off00007290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7290 10328 bytes
SHA-256: 5fde1b80b5c169672b90ebbd2dc2ca93345f4899cc4e10ab1b27df1a6617fd42

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