Malicious PDF — malware analysis report

Static analysis result for SHA-256 206f2f009ecd9ab6…

MALICIOUS

PDF

64.7 KB Created: 2020-06-07 23:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30ee6b2ec04903a15f1d8c23d332273a SHA-1: ff55cb1a482d9e7947e8a6b7069ae8575b4ff56b SHA-256: 206f2f009ecd9ab6b6caa3b9d4fb85ba2d8f36d530a9bf66bb95acdb15f39a1f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.ru/wp3?keyword=north+carolina+golf+guide#north+carolina+golf+guide`. Another heuristic identifies a PDF link farm, suggesting a coordinated effort to distribute malicious content. The document body, though partially corrupted, contains the text "North carolina golf guide", likely a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ttraff.ru/wp3?keyword=north+carolina+golf+guide#north+carolina+golf+guide
    • http://shop.doctormain.com/uploads/1/3/0/5/130546457/wetafosidisirejujafe.pdf
    • http://myoppconsulting.com/uploads/1/3/0/8/130873975/doxabuwogibi_motibu_nemez_nezosopafe.pdf
    • http://opcfoundation.net/uploads/1/3/1/4/131407691/busetikar.pdf
    • http://opcfoundation.net/uploads/1/3/1/4/131407691/busetik
    • https://gurofis.files.wordpress.com/2020/06/10894103945.pdf
    • https://moniliwi.files.wordpress.com/2020/06/dubukozibim.pdf
    • https://bijojaraduk.files.wordpress.com/2020/06/8506320622.pdf
    • https://jojazoxo.files.wordpress.com/2020/06/vozigivufomurezugigibawo.pdf
    • https://xagajomix448179464.files.wordpress.com/2020/06/56219597075.pdf
    • https://jevodoniweku954148245.files.wordpress.com/2020/06/6073624911.pdf
    • https://wexowugo.files.wordpress.com/2020/06/gaworugetuzi.pdf
    • https://japipunuwe.files.wordpress.com/2020/06/sidiwad.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1f7.bin
87faffd9180f750c20b3992a94190e6cb69e9de0957284b3beb95263a9abd6b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F7 11176 bytes

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