Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc301ea49e0cf72…

MALICIOUS

PDF

45.5 KB Created: 2020-09-02 15:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68e62f24a75e2b9d625e7d2b70158453 SHA-1: e92a27db59b191087b9a4aa34db5e14aa4bbe8cf SHA-256: dfc301ea49e0cf72bf745b4affd047de468d0bb9f2e7c53b0a3b272ef0b8b221
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, disguised as a lure for a "pubg android emulator for windows 7". This indicates a social engineering tactic to trick users into visiting a potentially harmful site. The PDF also contains a large number of external links, many of which point to benign content, suggesting a possible SEO poisoning or link farm tactic to improve the ranking of the malicious redirector. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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.club/wix?keyword=pubg+android+emulator+for+windows+7
    • https://static.usrfiles.com/ugd/b8c837_cc3593a299b44a2798f240f0b686a572.pdf
    • https://static.usrfiles.com/ugd/3649d2_cb5861ebaa1d4209b4228ca5b1a27178.pdf
    • https://static.usrfiles.com/ugd/db1da1_ce5eade10dd24e7fa7f5ed6f6cc7aaa2.pdf
    • https://static.usrfiles.com/ugd/197ed4_a92919e9bb1b471cab0e3ad4fc5a6393.pdf
    • https://static.usrfiles.com/ugd/ff3115_a706b787e98c407c8ba9fc3452eca368.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_e6fedcf133844adba7e06b55359bc6c1.pdf
    • https://static.usrfiles.com/ugd/136d07_5c254eccba79451a90b2ec6af14a8006.pdf
    • https://static.usrfiles.com/ugd/3615fb_ce35f39604dd44a0a970324078746100.pdf
    • https://cdn.shopify.com/s/files/1/0440/5926/3128/files/teoria_de_liderazgo_situacional.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/number_in_english_grammar.pdf
    • https://static.usrfiles.com/ugd/e8506d_0f1464b8bdb44e5ab7e196d3f9a31ab9.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_9892b9ca11d74c1384add157ceeceafe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006651.bin
e5bf67b8e05dd972916c0df52a654d3652b7dc9b6ac4410fe75d1becc59f1288		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6651 5424 bytes
font_01_sfnt_off000078b6.bin
948820a3130863ea4a0eccf907a5ae2359cf13e96f01cdef5a7e28d5e0325e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B6 10080 bytes
font_02_sfnt_off00009b29.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B29 4324 bytes

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