Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a3d18a17ded836…

MALICIOUS

PDF

33.4 KB Created: 2020-09-14 05:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c1dff9afd28b7046e92537e36ef723d SHA-1: 6267af2c970848b0d30c0352564f9b426473d0a9 SHA-256: b5a3d18a17ded836ea4ecd5c1369c343fde98e61250e19560a204bb3b8a3ad47
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/pify?keyword=city+of+fallen+angels+pdf+google+drive'. This link is presented in a way that suggests it is a search result, aiming to trick the user into clicking it. The document also contains a large number of external links, characteristic of a link farm, further supporting a malicious intent to redirect users to potentially harmful sites.

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.link/pify?keyword=city+of+fallen+angels+pdf+google+drive
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/noddy_cartoon_in_english_full_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/25026278204.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/audi_q5_2018_mmi_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/26676808528.pdf
    • https://cdn.shopify.com/s/files/1/0436/9540/7269/files/66371341731.pdf
    • https://static.usrfiles.com/ugd/384ea4_5d1b842f53cb436d9476a239734874d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_81ca39a2bb984dfaaf0607ac5dc7eed3.pdf
    • https://static.usrfiles.com/ugd/0e2875_a5bcfc6381cb422bb111bae43df04535.pdf
    • https://static.usrfiles.com/ugd/b47706_9ec80cda9e40424ca989b72786dbd138.pdf
    • https://static.usrfiles.com/ugd/c8a981_e2b13524b99845bf9c6623ade7b55ca9.pdf
    • https://static.usrfiles.com/ugd/828753_f3d35223b7b04813afe9e325b15a277e.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_off000044c2.bin
9fe781e91c6d63b41dded812298bd0d20fd822d5961407bb0cb688cabb515a35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44C2 5276 bytes
font_01_sfnt_off000056d2.bin
b2486fca501cf7d144e9d14585522fcccaa8b53be1569608aac40b53ac5da69c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D2 9996 bytes

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