Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6ee7b3e781d0de…

MALICIOUS

PDF

52.5 KB Created: 2020-08-31 08:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37861e49155b4a83d32fe3203a53bb95 SHA-1: 5696a5fa1e9d0c08602626260ebf5d506b55c92e SHA-256: 0e6ee7b3e781d0def214b3dda699572e8fbfcd08095399dc64731fabe09b5b88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a lure for Graphpad Prism 8 serial numbers, directing users to a malicious redirector at ttraff.ru. It also hosts a large number of other PDFs on Shopify, likely for SEO manipulation to improve search engine ranking for malicious lures. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs confirms the intent to redirect users to potentially harmful content.

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.ru/wix?keyword=graphpad+prism+8+serial+number
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/68461281088.pdf
    • https://cdn.shopify.com/s/files/1/0440/4497/6278/files/sojojusisagovopevetivojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1724/7640/files/cibt_visa_online_order_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/6318/1473/files/conveyor_guide_strips.pdf
    • https://cdn.shopify.com/s/files/1/0449/9944/2590/files/cursos_de_ingles_britanico.pdf
    • https://static.usrfiles.com/ugd/b8c837_b791972170c8475b940e8e287c149e54.pdf
    • https://static.usrfiles.com/ugd/b8c837_6903332262864fe29263e593f599942b.pdf
    • https://static.usrfiles.com/ugd/a298ce_3c5b94d2cf8c4b409454e3604b24ccb1.pdf
    • https://static.usrfiles.com/ugd/77eba6_a94c0922ddc9426a8172271eed37ba1e.pdf
    • https://static.usrfiles.com/ugd/20d83a_d98acae6137247c5bf46f881ac787224.pdf
    • https://static.usrfiles.com/ugd/b8c837_c3f3980ecb40432683dddd56453d5a04.pdf
    • https://static.usrfiles.com/ugd/cc089a_7506a5c49f4647bea63a6147b46b265e.pdf
    • https://static.usrfiles.com/ugd/69695d_72adc083cd384c45847f2ac69e720511.pdf
    • https://static.usrfiles.com/ugd/e2b09b_0f86508563f84d99bc8aa8694eee72f9.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_09116f2275f841ff817600b15114dc8e.pdf
    • https://static.usrfiles.com/ugd/f0e51d_b6ebb43ce9044aea8cabe990d7140aa5.pdf
    • https://static.usrfiles.com/ugd/3bf302_954d937615d14955ae137cad47af11d9.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008098.bin
ee7e26f3b289602cef263238efe80e1a608e95c1710b985a45e63e407bbc132f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8098 5256 bytes
font_01_sfnt_off00009233.bin
61096887bc71387139d99705d5de0b72d63d7a88092fce8a2dace71a0e9c49e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9233 10512 bytes
font_02_sfnt_off0000b638.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB638 4324 bytes

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