Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e53deb631820f6…

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 02:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab207c863d4baac762e3523176cac253 SHA-1: 8bf0a60b913c614299f9a35d70c85230e3ead9c3 SHA-256: 69e53deb631820f634497a28359c2e600d6adac4806adeae5202735d0838cf98
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with the primary redirector URL being https://ttraff.cc/wix?keyword=tom+and+jerry+advance+and+be+mechanized. This behavior, combined with the ML classifier flagging it as malicious, strongly suggests an attempt to redirect users to malicious infrastructure. The document body's content is heavily obfuscated and appears to be a lure.

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.cc/wix?keyword=tom+and+jerry+advance+and+be+mechanized
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_20112825a67444488be804422d35c2d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f42116102f64ca3866508ef0553202b.pdf
    • https://static.usrfiles.com/ugd/ecec20_15c558a68148436bac3af4d49e768020.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7318f5f86d74ce6b90b071dcefc3fb6.pdf
    • https://static.usrfiles.com/ugd/0a0016_1aaeccd700094e6d9140bbaa3bfbea25.pdf
    • https://static.usrfiles.com/ugd/37321e_653f42299d754a789a0c89eb3e8dffd0.pdf
    • https://static.usrfiles.com/ugd/db1da1_3a5859a94d9b475880dbfcf5aae78b63.pdf
    • https://static.usrfiles.com/ugd/b8c837_edbf9d3e982a4cc5be79995981a2a573.pdf
    • https://static.usrfiles.com/ugd/b8c837_39b5926b6d2743f98b7495f268de3080.pdf
    • https://static.usrfiles.com/ugd/37428b_087673e77c3d42e984799927f7c9a26d.pdf
    • https://static.usrfiles.com/ugd/0cd019_62bbd27b2bd549259334ce246b29b30b.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_7bf34491fa31482495c7edcb3603fb74.pdf
    • https://cdn.shopify.com/s/files/1/0429/5992/9503/files/mumerosu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4948/2400/files/1265514682.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/barefoot_in_the_park_full_script.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/unique_global_imports_manual_simulation_key_answers.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e29.bin
c6d39a7f652f9c247f7e729e432ed9ec6bb9b3a50b8928c96c4f4a461ae4825e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 5344 bytes
font_01_sfnt_off0000703c.bin
908fc98d507ca1e4bc1054b173f6ffabca5a922ae4589ff3e6c7ae85ab92f692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703C 9796 bytes
font_02_sfnt_off000091fa.bin
f610a9b2008b55dac58b9350b0c1d59b5925050a1329db8da7b92fc8e86c78c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91FA 17588 bytes

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