Malicious PDF — malware analysis report

Static analysis result for SHA-256 c490cfbbd7e3f000…

MALICIOUS

PDF

43.0 KB Created: 2020-09-01 21:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6f7bb89f04cd87fac9b8c783e7b83a9 SHA-1: 3c5980048207d77216f777755c5eff52cbae1721 SHA-256: c490cfbbd7e3f000ed0b1d469b9f954ecb847e3cedbefcff19dbce1de95450cf
148 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a car manual. It also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, likely for SEO poisoning or to obscure the malicious destination. The presence of a call-to-action phrase and a callback lure further suggest a phishing or social engineering attempt.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/wix?keyword=manuale+audi+q5+2017+italiano
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/20735326429.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4119/files/adminlte_for_codeigniter.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/49496608496.pdf
    • https://static.usrfiles.com/ugd/0d9a50_b9bf762e71d64d1eb9c299d749cc00dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fd71d79b93a453780e69ced8386f8ef.pdf
    • https://static.usrfiles.com/ugd/1e32c2_42a2220600124b199482f46e0df9ba85.pdf
    • https://static.usrfiles.com/ugd/bf650e_c44106180e284129886d55b486c9e5cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdf
    • https://static.usrfiles.com/ugd/b58d21_a8a686652c7a4268ae25953fcb56ffa3.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/iowa_reporter_carson_king.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/la_biblia_gratis_para_celular.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/2609908010.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_off00006239.bin
1553180926a7580d760a8c55a66173656373506635ec2e4a2cd92e0857b03eab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6239 5204 bytes
font_01_sfnt_off0000741c.bin
2153b934fa9d71fa38d19c5e66beb2d4dff2ee39a179f8bb26a90c5a666aa595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741C 13812 bytes

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