Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee03ec263abbfc7c…

MALICIOUS

PDF

36.1 KB Created: 2020-08-12 13:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7160d0f13667f0be3435dacdcf006afd SHA-1: f55a561a245bfee3901dc6eb37c41f2dd0ee8464 SHA-256: ee03ec263abbfc7ca281db3314f26514dbd98926c40a911b2b076712dd6559fa
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/wb?keyword=manual%20chevrolet%20optra%202007%20gratis'. Another critical heuristic identified a large number of external PDF links, suggesting a link farm for SEO poisoning or malware distribution. The document body, though heavily obfuscated, contains text related to a 'Manual chevrolet optra 2007 gratis' and the malicious URL, reinforcing the lure. The primary attack pattern involves redirecting users to malicious infrastructure.

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.com/wb?keyword=manual%20chevrolet%20optra%202007%20gratis
    • http://files.fiteducationconsulting.com/uploads/1/3/0/8/130874246/2450914b.pdf
    • http://xamasama.donnahebertdesign.com/uploads/1/3/1/0/131070571/c673ec19.pdf
    • http://files.exclusivedancerecruitment.com/uploads/1/3/2/6/132681325/eb2b7f56d47a.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/runesifakatim.pdf
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/51933834102.pdf
    • https://cdn.shopify.com/s/files/1/0435/5774/8897/files/73518321087.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/91308900561.pdf
    • https://cdn.shopify.com/s/files/1/0435/7649/2195/files/adventure_time_episode_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8416/files/tofexijebidenuweruzag.pdf
    • https://cdn.shopify.com/s/files/1/0428/3252/7526/files/23083025186.pdf
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/79045749775.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/zudutawiki.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_off00004ee4.bin
32f9c6cbe47ad5aba93c7ddd8544db1ed01868652b9cc1ba10822371d4efd250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE4 5616 bytes
font_01_sfnt_off000061ff.bin
933d0f9d58f33a018ac4df6e0398eb77d384ddc546222195d0b13e8bcdc78f9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 9876 bytes

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