Malicious PDF — malware analysis report

Static analysis result for SHA-256 2097b1bb9c85c611…

MALICIOUS

PDF

42.9 KB Created: 2020-09-03 13:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a85bc4d354198aefb2d422dca1c4a0dc SHA-1: d0d022f21f5bcc3def18779f52fdc2b72fd715e8 SHA-256: 2097b1bb9c85c611814421f61dd2660bb18859039dc39bac22b0b3c64c17797d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=test+bundle+app+android'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent to redirect users to potentially harmful sites.

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.cc/wix?keyword=test+bundle+app+android
    • https://cdn.shopify.com/s/files/1/0433/9571/1132/files/zelda_ocarina_of_time_wiki_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/9812/5976/files/haryana_gazetted_holidays_2020.pdf
    • https://cdn.shopify.com/s/files/1/0462/4328/3104/files/22038080343.pdf
    • https://cdn.shopify.com/s/files/1/0435/4985/1811/files/46507086815.pdf
    • https://cdn.shopify.com/s/files/1/0433/7834/4085/files/rifijolatoxofifimirob.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3c1d65ba4fa411aa6448037372a4910.pdf
    • https://static.usrfiles.com/ugd/b8c837_40a2cbe2afd748799e551873f3087246.pdf
    • https://static.usrfiles.com/ugd/7f929b_56a910e517d54c4bbf81de2aed0ae577.pdf
    • https://static.usrfiles.com/ugd/b8c837_374079b2775b4614b91333ce9e794495.pdf
    • https://static.usrfiles.com/ugd/bdeb4c_856f3bf10a8a4764acc1ce2075134787.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e2c51bd73404a989aa91434f55decf8.pdf
    • https://static.usrfiles.com/ugd/6c98bc_2111ff0284584126a367c1b25c0882f3.pdf
    • https://static.usrfiles.com/ugd/d90490_b39fb23139434b34baad0a8db24c6d7b.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/zifapofusutoxidozodonekun.pdf
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/renoviwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/17561004080.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/
    • https://static.usrfiles.com/ugd/b8c83

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a6c.bin
695091bedb79dfc81d92a2a9f2a6b7488bd6ccea8caa26b6f5d5a1fd45101094
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6C 5040 bytes
font_01_sfnt_off00007b93.bin
dc1f80a141558be45c57be34db6232e2d1cb34e2af00e9f33a0d2906618527a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 10264 bytes