Malicious PDF — malware analysis report

Static analysis result for SHA-256 24988078d878929d…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 08:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ba430cbd427536d80b0d7a51b9a99c4 SHA-1: 254e1fb34a38057258e869be8c5de85319d4f7db SHA-256: 24988078d878929d498d4e9247ec86c6c7ba490d75d6636da26f2b8715dc976b
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Ati mobility radeon x 2300 driver' and the malicious URL, suggesting a lure for a driver download. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, further supporting a malicious distribution pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ati+mobility+radeon+x+2300+driver
    • https://static.usrfiles.com/ugd/fe83c3_2816be413ba54f97ace5050878013915.pdf
    • https://static.usrfiles.com/ugd/405339_c4a35142d504408b8219ff6086db5c1a.pdf
    • https://static.usrfiles.com/ugd/7598fa_caa36de71b60416db5033ffc6e8e86fe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/go_formative_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/64245809568.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/brche_krzen_6_klasse_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/96670452533.pdf
    • https://static.usrfiles.com/ugd/bf650e_507f6b9669af40bda9926cb707eee25e.pdf
    • https://static.usrfiles.com/ugd/111c46_e0ec3e83dab748b2bb5ff519a6f63314.pdf
    • https://static.usrfiles.com/ugd/12f4eb_dc17067bebbc43bca28cb860df756bd8.pdf
    • https://static.usrfiles.com/ugd/0a593f_4fb4ce193b8e4ad0b435b6580e18a1c7.pdf
    • https://cdn.shopify.com/s/files/1/0457/7463/5174/files/10842792560.pdf
    • https://cdn.shopify.com/s/files/1/0428/8993/7055/files/simply_easier_payments.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/avakin_life_mod_ios.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_off000068ab.bin
5dc27f58bfd1a06026c6bcaac26a870369a9ade32b8ba5ae857168d5efa21d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 5592 bytes
font_01_sfnt_off00007b9e.bin
96c26a0a28347cc9c4f05c37159af567e4bc098235bfc8e562fa3e907a3d74f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9E 10376 bytes

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