Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c0c3265cae2219…

MALICIOUS

PDF

48.5 KB Created: 2020-08-29 20:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ba2ba98304c2379363fe051efb571af SHA-1: c646fd267f0a57c4f81a4b3991649a5cdcdd00eb SHA-256: 44c0c3265cae22197ac80d79d240abb1ac369c4a3ec68e9c1bf81a587695b521
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link, 'https://ttraff.com/wix?keyword=peter+and+the+shadow+thieves', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking Shopify URLs, suggesting a coordinated effort to distribute malicious content through a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=peter+and+the+shadow+thieves
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43561311815.pdf
    • https://cdn.shopify.com/s/files/1/0438/4954/7938/files/pdf_to_ms_word_converter_software_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/9274/5117/files/20612112741.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/frog_dissector._exe_download_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_25ce794ea87541828f2e8ce8877a5f8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_447a6753bb234add81661ee07112d95c.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_78363311e8d44a86918ed4b125735f26.pdf
    • https://static.usrfiles.com/ugd/b8c837_0498c0ee08044bf8bb70d73c57a1bc4a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d561bd7e3df411cb018252ae87adcdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_d14c48d4c1664a3da4a58274d6d36e87.pdf
    • https://static.usrfiles.com/ugd/b8c837_d338ef3bfea54650b258c3a3c51d4b70.pdf
    • https://static.usrfiles.com/ugd/b8c837_95b63f57fc54495db8ce1454c6586e8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8f9203f2bd8442da0d253efdafe0730.pdf
    • https://static.usrfiles.com/ugd/b7082a_8f095eed1e104c47be40a0294e9885c0.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_off000081ee.bin
0e64d7c1bc9bb6488db4d3eb5047ad5c14b2aae620e9a5ca4cc29a76363bb521
pdf-font-stream PDF embedded font (sfnt) at offset 0x81EE 5032 bytes
font_01_sfnt_off00009314.bin
254956e2fbfd6be92610538e636246defa0b7266e9777a402ad8ece64f3cf760
pdf-font-stream PDF embedded font (sfnt) at offset 0x9314 9980 bytes