Malicious PDF — malware analysis report

Static analysis result for SHA-256 309d21bdc2301b22…

MALICIOUS

PDF

84.0 KB Created: 2020-11-05 15:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4ac6f7ea5ed71a20deebae97f24a33b9 SHA-1: d59a7b418a0ca3bc9377527c4daec6e57afa5eb8 SHA-256: 309d21bdc2301b22fa91027abe9ef769d0df6d968b48a6c62c516bc0b958846f
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure (ggtraff.ru). The document body, though heavily obfuscated, contains text related to 'rocket league spreadsheet pc' and the malicious URL, suggesting a lure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=rocket+league+spreadsheet+pc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393359/normal_5fa3cdac120c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446646/normal_5fa3133013a02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f8ca2fda8be7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/leckey_kit_chair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2965b0dc-c016-4e88-9ea4-7c96616fa105/77931981714.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/79377789564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d071a2a0-da39-4b91-9f3e-9191115733fe/kent_repertory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/344a288c-de0e-4752-a93e-89c05549e734/warlords_epic_conflict_hacked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f43bb6-0fa4-4140-a77b-8e9acd4cb5a6/84833262394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5d21cd6-2fb0-4dc4-ba1d-46be91140468/gomivawovej.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/xubukoketogiwuge.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_off00010410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10410 5408 bytes
SHA-256: 5cf70177fe0e5a6ead03b0977603ae3dc176388a8d416b6f96d2ee4fcb5fbd82
font_01_sfnt_off00011675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11675 17228 bytes
SHA-256: aef01a3c15724642bcb03605b3a476f703c083233e69b9fcb0d7796b0766b1a4

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