Malicious PDF — malware analysis report

Static analysis result for SHA-256 d972f6eda540a752…

MALICIOUS

PDF

52.7 KB Created: 2020-08-16 15:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e8ca51d6adb4be4830a79bfe85953a1 SHA-1: 9d96deaf628a77ce969b7325e31fd9195fb4fae1 SHA-256: d972f6eda540a75266e3587ff5414089cc9fd95a7402363f9e605e74aec561fb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell 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 identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bleacher+report+application', suggesting a phishing or malware distribution attempt. The document body also contains text related to 'Bleacher report application', likely a lure to entice users to click the malicious link. No scripts were extracted, but the extensive link farm and the identified malicious redirector are strong indicators of malicious intent.

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.
  • 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.
  • 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/pify?keyword=bleacher+report+application
    • http://files.reneesuniqueboutiqueandmore.com/uploads/1/3/1/4/131454816/bubujonejigagigak.pdf
    • http://files.ourconsciousconnection.com/uploads/1/3/1/3/131381518/da89c5.pdf
    • http://files.triplea-solutions.com/uploads/1/3/2/6/132681392/dibowakesuvatimo.pdf
    • http://lukonu.mrhebert.org/uploads/1/3/1/3/131379874/238186.pdf
    • http://files.movie-season.com/uploads/1/3/1/8/131856743/d9ab73a8352a9.pdf
    • https://cdn.shopify.com/s/files/1/0428/6952/2599/files/extrusion_blow_moulding_process.pdf
    • https://cdn.shopify.com/s/files/1/0434/4768/1191/files/faxuvuwon.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/59581272423.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1493/files/63460041389.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/43084857986.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/gufiwifinujikopixunogevep.pdf
    • https://cdn.shopify.com/s/files/1/0435/8298/0259/files/48571847044.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/soluwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/25387984790.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/kaligufafiwesofoxip.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f08.bin
0e5ab1bf6ba361ca1b191d53ffb806906ae876acce0f8edcef6b75fb6ebc139b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F08 4892 bytes
font_01_sfnt_off00009f9e.bin
e4c72cbc74356f5ca84bc9536e8d7f37a97cb9f335d34a754ca525939d95dc50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F9E 11340 bytes

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