Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff4d9012ecb3398…

MALICIOUS

PDF

36.8 KB Created: 2020-08-31 01:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77ac0f5f50b4a16838bb68efdf16274c SHA-1: 6bcf09df1f74612cc64cd7b1f6822aaa62740c44 SHA-256: eff4d9012ecb3398efd89fa1ba2e2506888de9c2b36210af32f88225f8362554
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=teed+off+pinball+manual'. The document body, though heavily obfuscated, appears to contain text related to a 'pinball manual' and the malicious URL, suggesting a lure to a malicious site. The file also contains a large number of embedded links, many pointing to static.usrfiles.com, which is flagged as a link farm.

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/wix?keyword=teed+off+pinball+manual
    • https://static.usrfiles.com/ugd/b8c837_2a7ab4fa13ef4a3381c92a1aa9ddd512.pdf
    • https://static.usrfiles.com/ugd/824332_cf6cd7a347ac4c5c8a3c4ab5cb859504.pdf
    • https://static.usrfiles.com/ugd/97634b_ceb4d90c20a947588bef3dc3819284b3.pdf
    • https://static.usrfiles.com/ugd/0779a3_64c206ff27f74da18cf312b8dfdc0b81.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/joxitomisoxureze.pdf
    • https://cdn.shopify.com/s/files/1/0437/8224/2466/files/arduino_bluetooth_control_plus_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/3064/2837/files/79098401193.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/cours_analyse_2_smia.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1295/files/tatibalojireponavegujevul.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8053/files/99263684217.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/10483072600.pdf
    • https://static.usrfiles.com/ugd/f55bec_df8412ac3ddc44c19cb35455a8db689f.pdf
    • https://static.usrfiles.com/ugd/2c608b_cc37d3e212b64bff8c1fe38464d44e4e.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_834d83319c2f410b941179845c685c78.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_off00005007.bin
700b6d628253f99bed952bc9326084b931643271728590033384ff525b6f8787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5007 5000 bytes
font_01_sfnt_off000060f3.bin
e2afd134cc8c980439d6dba5a9e4e2c4612b84b98484683f1a5a39d04b4119e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F3 10608 bytes

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