Malicious PDF — malware analysis report

Static analysis result for SHA-256 09209a37921d6541…

MALICIOUS

PDF

52.0 KB Created: 2020-10-31 15:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b9c3df23c7e0a8623269a6fada3787ac SHA-1: 1f1d21e296e892955a82bd69322a102009f92930 SHA-256: 09209a37921d65419716e3e1c60e8dc2de180da99bcf07b1933d110819fabf29
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is embedded within the document body, disguised as a search query for resetting a TV. The PDF also hosts a large number of external links, suggesting a link farm for SEO manipulation or traffic redirection. The ML classifier strongly indicates maliciousness.

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/pify?keyword=how+to+reset+samsung+plasma+tv+without+remote In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/leributafa/field_engineer_salary_construction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5386/1032/files/74745972047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3007/6318/files/27658460462.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/89241218684.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/wokil.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/50712536583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99fe81c3-6c6f-42e8-99fe-a561b8b35612/playstation_4_app_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/40457067422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2348/0987/files/95929040809.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/91032511905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd8fcad-76e5-457a-bd35-8f358f2b962d/5763680945.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/lisewam.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/52955564780.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_off00008b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7E 5348 bytes
SHA-256: e286ea98936d19ca7e02fc85a6641951e3c7ec646442fa221d46fe7c511f28bb
font_01_sfnt_off00009d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D97 11236 bytes
SHA-256: f9baca9b958a2826fdc2fa7b76e1fd049db2fa136942486432f83cacbb305b7f

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