Malicious PDF — malware analysis report

Static analysis result for SHA-256 5267834bce5627ca…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 11:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dee4296760e6ebca75fe2f61cf5a413 SHA-1: 8ff9a5c4c2b58e6e84e627f669eb67729dc51b07 SHA-256: 5267834bce5627ca8e9ce62db3851659b3e83e52c74d783aa52e0ca0e8e6934f
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=uet+admission+form+2019+lahore`. The document body also contains this URL and numerous other links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is likely intended to redirect users to a phishing or malware distribution site.

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=uet+admission+form+2019+lahore
    • http://files.afotech-vn.com/uploads/1/3/0/9/130969731/bizirafowunimixovir.pdf
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/ncert_class_12_chemistry_polymers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/board_of_directors_powerpoint_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/woximowosuforoputob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/creative_writing_worksheets_for_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3121/files/fabitasaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/75101283647.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/cricket_game_for_android_2019.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/basetiror.pdf
    • https://cdn.shopify.com/s/files/1/0429/9233/7059/files/8895517136.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/rakagu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/fuzoropujokekitojezor.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_off00006158.bin
8bf59e13a7e63edc13154a8b789d4b9de2d1d1a6650136d76b1ffee7705f85e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6158 5620 bytes
font_01_sfnt_off0000744b.bin
7151202af47889d99c5b3585370000675d31522e354bcdd001a12c0bf32e83d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744B 10144 bytes

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