Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4307c1e4235a57…

MALICIOUS

PDF

39.8 KB Created: 2020-09-01 15:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8842453b88383dfbb2d2ebdde2013619 SHA-1: 7f192a168ec6f5b8450317b829a3f77f2e0c2d79 SHA-256: 9f4307c1e4235a5713f4738c511b07f7fdc989b379b852e2a59a797893c412aa
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the URL and keywords suggesting a lure related to 'airplay iphone 5'. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating a potential SEO poisoning or spam campaign. 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.ru/wix?keyword=airplay+iphone+5
    • https://static.usrfiles.com/ugd/ca300b_e546c3294176412b8db08d763596d120.pdf
    • https://static.usrfiles.com/ugd/e3c460_4305695fefdd4f3cb3a632e607442790.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ba49b58ce7449a587958b952fcb2dcc.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d8dc1a71c5049d3bb32f148367213dc.pdf
    • https://static.usrfiles.com/ugd/89363e_30dc587db85d452a9bbcafab270bca80.pdf
    • https://cdn.shopify.com/s/files/1/0432/2672/6568/files/agents_of_political_socialisation.pdf
    • https://cdn.shopify.com/s/files/1/0431/8769/9876/files/pedaregopisini.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/bumarumuxuwimuxojamagupez.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/jinevipim.pdf
    • https://static.usrfiles.com/ugd/cf79db_abe05ba5440a40d79432da1c33072203.pdf
    • https://static.usrfiles.com/ugd/4b68be_3108b64f16a04f65a3ab16ff571e0fdc.pdf
    • https://static.usrfiles.com/ugd/4b874d_26ab09f404ff4e2ea3d487fa4777b2b8.pdf
    • https://static.usrfiles.com/ugd/e00bd3_5d2bf25a867646ddbdf2956d2f8dbeb5.pdf
    • https://static.usrfiles.com/ugd/0d2908_670bc17ec14d449ca6b54db9856f29b5.pdf
    • https://static.usrfiles.com/ugd/74a852_b81efca657d14815aca8bd5de8f0bbac.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_off0000608a.bin
42ad99d181643ac2230dea14cd0c55fc25840d4444ebc4f320e6a54b32f19b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608A 4944 bytes
font_01_sfnt_off0000715c.bin
7b2393b6e642031981565dbc0331ddded73457075a27daf04a3b905460e4ef5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715C 9748 bytes

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