Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afd6a7b1b26db18…

MALICIOUS

PDF

46.7 KB Created: 2020-10-22 14:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29c5de4e4b8270141832de155a4b4aab SHA-1: 740cc5a963f01529d45e3a0e73acc12f401ecf82 SHA-256: 4afd6a7b1b26db186ea5c9b4f925eb8505400c51717a08e878f4225e11a011f9
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or malware delivery 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://ggtraff.ru/123?keyword=precio+de+lijadora+de+banda+manual+usada
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8c0efc2fcd0.pdf
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f8819e60b3f1.pdf
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f89d37fed358.pdf
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f88d8338dc15.pdf
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f8d15f0eb704.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0abe3e6f-ae70-4f0d-9152-d600b7df1cdb/leleta.pdf
    • https://uploads.strikinglycdn.com/files/1c95c4e3-3a60-4b1e-943d-86b6b7034235/92220564315.pdf
    • https://uploads.strikinglycdn.com/files/8a632434-a47f-464b-ac05-dd37132d60de/89674339977.pdf
    • https://uploads.strikinglycdn.com/files/3bce4c5d-1b3f-4b24-9e57-8455d2b59fda/86408902432.pdf
    • https://uploads.strikinglycdn.com/files/8129517c-2868-4ae1-b59a-47347e529b7f/fagitebifefe.pdf
    • https://uploads.strikinglycdn.com/files/5e5b1014-a77b-4898-ab76-62dc7b9a202a/tomatimubizu.pdf
    • https://s3.amazonaws.com/fasanag/jimafijideteguwabaz.pdf
    • https://s3.amazonaws.com/henghuili-files/257435041.pdf
    • https://s3.amazonaws.com/sugaguxagu/bhakti_movement_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/0aa71d1e-e442-47fc-b161-9284ae7dfe6f/39545649452.pdf
    • https://uploads.strikinglycdn.com/files/a4261f35-6236-4328-8a75-1998e34d290e/8563849242.pdf
    • https://uploads.strikinglycdn.com/files/0031c696-aa15-4eca-b4c4-857494a82cbc/rawugevaderefot.pdf
    • https://uploads.strikinglycdn.com/files/a50c2d19-3055-4038-a29a-ba2e33a2b851/zanutozamev.pdf
    • https://uploads.strikinglycdn.com/files/c574a90b-6a2f-4b9b-a681-1256c365c65a/star_wars_revenge_of_the_sith_full_m.pdf
    • https://uploads.strikinglycdn.com/files/7b2dc163-3987-47fe-a917-186d23367135/68186914102.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_off00007460.bin
c1ac762386c90ec57e5ad31f36fac5744c6ace1e1f314aa9f149000ce327230e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 5300 bytes
font_01_sfnt_off0000863a.bin
77fb707cd1d86e789fffecb412798691bc16d385038beef2bb11126bf9ec2892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x863A 11436 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.