Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ce69cf1010afb01…

MALICIOUS

PDF

43.2 KB Created: 2020-09-01 07:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbec2f7e9f90cd0ada028d6cc778c990 SHA-1: 3ccfadc1c8612fd92236f7ff9cc3527749cdf99f SHA-256: 5ce69cf1010afb01b305c3ec242b183dff4190a21a52fb54ebe36e843995f420
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of numerous external PDF links also suggests a link farm, potentially for SEO manipulation or to host further malicious 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.cc/pify?keyword=imagine+lyrics+piano+sheet+music
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_2d203d21240a465093e959cf2253ab73.pdf
    • https://static.usrfiles.com/ugd/253000_189e248b15b94a06ab80fba52eb5f1de.pdf
    • https://static.usrfiles.com/ugd/b8c837_f97fa90c669740a3bcc3e42ca525cfbf.pdf
    • https://static.usrfiles.com/ugd/fef806_1fb651ab2b1f4c13b8cc92033d888e43.pdf
    • https://cdn.shopify.com/s/files/1/0463/3110/1346/files/21579751653.pdf
    • https://cdn.shopify.com/s/files/1/0431/6538/4861/files/47230312199.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2381/files/11153554134.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2613/files/tomanebenozi.pdf
    • https://static.usrfiles.com/ugd/8127dd_e7d8d9256c2d40a68f149c5adab24662.pdf
    • https://static.usrfiles.com/ugd/1ee69b_330115e354b6494b94bf4c5442c8e268.pdf
    • https://static.usrfiles.com/ugd/87a178_e61e59cfb95c4661818b1ecd5bc4e3ae.pdf
    • https://static.usrfiles.com/ugd/1f5cef_2eb3b4dac65047708f47bbb828845d19.pdf
    • https://static.usrfiles.com/ugd/7598fa_cb4e87935c254a2ca5cb9d4f5c99d989.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://creativecommons.org/lic
    • 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_off00005070.bin
8734e4daafc04bf044653fed708d7cbcaeeb779378a0fffd79b3c938fd2ffdaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5070 5268 bytes
font_01_sfnt_off00006225.bin
12fc62bea8f7e5da6d4d3bfbdcebf1d5f031837e3a2b39438e81114c9aa80fe1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6225 14528 bytes
font_02_sfnt_off00008f8d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8D 4324 bytes