Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1f2658510dc7b0…

MALICIOUS

PDF

43.3 KB Created: 2020-09-02 09:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 069d6f126bb3d989d3c64b429afc52cf SHA-1: ceafcba46c0a46edbbf1b22cf84cc925ebdbaedf SHA-256: ae1f2658510dc7b070f7ad12987b95564c2bf165530bfed4473beb9446b71cc6
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/wix?keyword=blacklight+retribution++official+site, which is likely used to lure the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=blacklight+retribution++official+site
    • https://static.usrfiles.com/ugd/b463f2_56d1b2b90ddd4370a6a57bc04c8c46c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d89f2b7a62d84af993ab75ef9d688621.pdf
    • https://static.usrfiles.com/ugd/895bef_d670d5815443401c87bbedcdb6e216bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_c18c34ad10884e728dd5f90b0d3ff43b.pdf
    • https://static.usrfiles.com/ugd/b8c837_65e00add5f7e4f819b732a07367ea238.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/angielski_w_tumaczeniach_sytuacje_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0466/2758/6213/files/graduation_announcement_card_template.pdf
    • https://cdn.shopify.com/s/files/1/0463/0495/2477/files/intermediate_algebra_12th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/jejexupubukewuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6049/files/82542186869.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/porojokirimu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/falotibixetox.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_off00005e47.bin
859f897d5ce17a1cfde147fe8678b99fbb0964a3ffb9fdaf45c6e0e756687727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E47 5276 bytes
font_01_sfnt_off00007031.bin
0566d8fac3a69870a5ab79b07a274736f23d8ccd579642628ff076ebf8a500d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7031 9920 bytes
font_02_sfnt_off00009238.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9238 4324 bytes

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