Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b36c018676cab6a…

MALICIOUS

PDF

44.1 KB Created: 2020-08-31 03:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c9ab904158f2911810af62be6bbfee SHA-1: c6ef4a67ff7cc144984e73fccd1982bc887268a2 SHA-256: 1b36c018676cab6ab9d7cbe158898b081b54bf0ab79d7318099c719ad95c8f70
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=pentoxido+de+dicloro+formula', which is flagged as malicious. The presence of numerous links, including to Shopify domains, suggests a link farm or SEO poisoning tactic to lure users to malicious content. The file's purpose appears to be directing users to potentially harmful websites under the guise of providing information.

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.ru/wix?keyword=pentoxido+de+dicloro+formula
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/god_of_war_3_pc_game_iso_free_downlo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/46615458100.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2072/files/bertold_ulsamer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tapowizilefaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/uos_b._a_admission_form.pdf
    • https://static.usrfiles.com/ugd/1b8612_54db5f3a9678480f95a0cff924cd8e0b.pdf
    • https://static.usrfiles.com/ugd/769f78_6eebb3ee9bbf49deb4312e93f172fa14.pdf
    • https://static.usrfiles.com/ugd/b8c837_93df851ba33a428ba21dde46959a3e73.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc867e3c0f824837a0a84fdce9969f33.pdf
    • https://static.usrfiles.com/ugd/191a6d_ef653d4e89da4beb9ae05751044d50d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb7f2479483b46509ae1b8bf42284415.pdf
    • https://static.usrfiles.com/ugd/4c1554_46a582efdd2f4e73ad3613b02ef2fdde.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ea82feab48846e2affe08e1fd49485a.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_off00005520.bin
016625567c361706b390fee7745091d639bbe71a41acab7fd24d19d101aaccb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5520 5060 bytes
font_01_sfnt_off0000663a.bin
a43f031cf62493fae546bb2dc5f9c67e4dfd9d0a069b67d49e72cb635f9dffbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 12688 bytes
font_02_sfnt_off00008e63.bin
adb4674434390813b481ca077012106496299401195bc4babefc956c6f22bf1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E63 16152 bytes

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