Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ebd252f563c2271…

MALICIOUS

PDF

46.6 KB Created: 2020-08-29 05:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2766de8e703631c5aedece79703862fe SHA-1: cb014ab557b31817b07a5196f14faf22abc7562b SHA-256: 3ebd252f563c22714ea5d020369a4220b5782cacda399ebfb37c58e262d02047
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is associated with malicious activity. The document body, though heavily obfuscated, contains the same URL and references a 'Neil deGrasse Tyson bobblehead', suggesting a lure to entice clicks. The presence of a PDF link farm further indicates an attempt to distribute content or traffic to potentially malicious sites.

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=neil+degrasse+tyson+bobblehead
    • https://static.usrfiles.com/ugd/b8c837_3632ca7fdb0a49d7815eace3d6f9d49d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6983e9bcd0c43b4a205b45579147349.pdf
    • https://static.usrfiles.com/ugd/b8c837_313abcab9aa74276abf6d0758529c226.pdf
    • https://static.usrfiles.com/ugd/b8c837_245bc0de6ce74036a6fc81d208074385.pdf
    • https://static.usrfiles.com/ugd/b8c837_db22fea874a34d95978f0d76a2785027.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/11582685650.pdf
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/52574366497.pdf
    • https://cdn.shopify.com/s/files/1/0440/7053/5318/files/fidetiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/lugej.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/garuzagazutidodabepedosu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/chain_rule_derivative_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8059/8172/files/17300559810.pdf
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/tamilrockers_hd_movie_2019_tnmachi.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9f555f6009e4528b728fa103a567462.pdf
    • https://static.usrfiles.com/ugd/b8c837_304601a1fbf14aa2a6063724162a478d.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_off00007675.bin
648f5383db134a6fa68661263c8cf83ab2b8bcde9860cd67e1dbf824a984f239
pdf-font-stream PDF embedded font (sfnt) at offset 0x7675 5296 bytes
font_01_sfnt_off0000886b.bin
a46adf45d38476890ac293b490e30320996dbc1f9a2df845a97285806c36bf78
pdf-font-stream PDF embedded font (sfnt) at offset 0x886B 10704 bytes