Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd32ecce9d7f0f3…

MALICIOUS

PDF

32.9 KB Created: 2020-11-03 20:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5786694e0519c9c080417b5c4c83c22f SHA-1: eacb23f39a223f8db5f17a7f8dc00ba4f1a42cd3 SHA-256: bfd32ecce9d7f0f34c1ffe0b00504f2ebe85a68fcdf2f4492b466d73cf4b0f94
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, ggtraff.ru, which is designed to lead users to harmful content. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious URL, suggesting an attempt to lure users with a seemingly innocuous topic like 'Pokemon ex gx' before redirecting them.

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/aws?keyword=pokemon+ex+gx In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411498/normal_5f9fcaca4d568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5f8dab9bf0823.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8950c19afc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f95277022faa.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/fezenur/90620946051.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/ropaniwuxov.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/paula_jai_parker_the_summoning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05bd95f4-691c-429e-b44d-0afb78d0f6fb/pavilion_on_berry_mn.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/60682182687.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/52618318132.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/zipulupem.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/tamedafevuduse.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/4058053281.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_off0000444b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x444B 4624 bytes
SHA-256: 55c81433b024b64b62388bbc1147e782256af2ab73fc53bd257c17c1003cb99f
font_01_sfnt_off00005404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5404 10224 bytes
SHA-256: 8d89a5b4c53e24d6b23573e9af4ca964e56cae5b0d203a8b84c1c0af395b59dc