Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd9270e0a738d4b…

MALICIOUS

PDF

53.9 KB Created: 2020-08-24 13:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c26a9f94ee390e6b9d5c62ac9e82943 SHA-1: 63ab3c7f1db7fe15afa0ece9ae9db70e87acd184 SHA-256: 9fd9270e0a738d4ba2925254eb962d0d4d61e9204f240da02c643836d303c4f7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm. One of the primary embedded URLs, 'https://ttraff.cc/pify?keyword=breezingforms+upload+file+size', points to a known malicious redirector service. This suggests the document is designed to lead users to malicious content or phishing sites. No scripts were extracted from this sample.

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.cc/pify?keyword=breezingforms+upload+file+size
    • http://files.pameladvorakblog.com/uploads/1/3/0/7/130739974/lotozabemib.pdf
    • http://files.pickinstick.com/uploads/1/3/1/4/131438539/wisur_tuvapudafun.pdf
    • https://cdn.shopify.com/s/files/1/0438/5760/8864/files/bstc_2018_paper_answer_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/gusewebuxojedub.pdf
    • https://cdn.shopify.com/s/files/1/0444/1328/8614/files/rubapoxarexovuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/9937/3214/files/aerial_photography_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/lirep.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/xolizagumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/kixutaxibarogunapuluvoni.pdf
    • https://cdn.shopify.com/s/files/1/0438/8257/8088/files/catholic_bible_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fc4.bin
4881a0ed89a2aab22e85a5a60ea90507f0e5891c42931cdc6a46103e8828ca5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC4 5460 bytes
font_01_sfnt_off0000824a.bin
e4f8df87156df3005610302ad801feb7f215fa0cac0183218944c66a1e5eb9cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x824A 16632 bytes
font_02_sfnt_off0000b5fb.bin
794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5FB 16168 bytes

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