Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d8d1800ff338f2…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 05:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86172fc279abfea6bf043531c3b21086 SHA-1: f4156c68e36f04a51475cbb81360c203a258631b SHA-256: 83d8d1800ff338f2fd3a2183a1bd07aa25ea537f76bc6513436b3be80461961a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a download for 'security monitor pro crack'. The document body also contains this URL and numerous other links to PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The heuristic 'SE_SECURITY_BYPASS' suggests the document may also contain instructions to disable security software, further indicating malicious intent.

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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=security+monitor+pro+crack
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/79826543404.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0445/files/rolling_stone_top_500_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/tabujokala.pdf
    • https://cdn.shopify.com/s/files/1/0433/7473/9607/files/fejelijafumore.pdf
    • https://static.usrfiles.com/ugd/b8c837_a23303dda1464c76afcaca4c6ccba19b.pdf
    • https://static.usrfiles.com/ugd/26481d_bfa3d05207d44ad48c40654e83de0af9.pdf
    • https://static.usrfiles.com/ugd/078c79_0798cd22ced747c494d9308ac81ed4b0.pdf
    • https://static.usrfiles.com/ugd/9757e7_03764fe4b1464357a094d73863d1d837.pdf
    • https://cdn.shopify.com/s/files/1/0463/1907/5485/files/nukupunusoxikivoxigalar.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6630/files/general_annuity_example_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/5603/7016/files/84050188506.pdf
    • https://cdn.shopify.com/s/files/1/0438/0711/3373/files/revista_eudora_ciclo_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/32531956349.pdf
    • https://cdn.shopify.com/s/files/1/0432/0129/8594/files/electronic_cables_and_connectors_mcq.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/agriculture_saharienne_algerie.pdf
    • https://cdn.shopify.com/s/files/1/0463/0862/2493/files/gmat_official_guide_2019_error_log.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/gokinevos.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/pazoluzikuxemux.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_off0000612f.bin
c54a36696b7b4943521e44e36d26949aeadcfc953a2710f88897f72106c6d728
pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 5136 bytes
font_01_sfnt_off0000729c.bin
c54fbfc5c901330704240ec22120a6a773b2254b4a4b030285b0a1e8e6facd85
pdf-font-stream PDF embedded font (sfnt) at offset 0x729C 10776 bytes