Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2226d95b6de222e…

MALICIOUS

PDF

47.8 KB Created: 2020-08-29 19:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c053cd8baec4e2cfc1df378627be39c SHA-1: 46661c94f129c898d2af292d820b49852ad3f94d SHA-256: a2226d95b6de222eda4cfbb3d96c505c48325b103c6bb5d89581afba03f129fa
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO poisoning or to obscure malicious redirects. One of the primary links, 'https://ttraff.com/wix?keyword=lord+of+the+rings+middle+earth+2+torrentle+indir', is flagged as a malicious redirector. This suggests the document is designed to trick users into clicking malicious links under the guise of providing search results for popular 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.com/wix?keyword=lord+of+the+rings+middle+earth+2+torrentle+indir
    • https://static.usrfiles.com/ugd/b8c837_c5576bb4e82e473a9abac39e90c939a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac753bca0bb94788a20ddbf941e9964c.pdf
    • https://static.usrfiles.com/ugd/b8c837_239eaed5c54947e5850fb8e2d4534385.pdf
    • https://static.usrfiles.com/ugd/067ecb_6bd9eb5861444bcbb4882e57c6f7a2e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c29623315d34921a674195d9875160d.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/36470145518.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/dapebetusofulilovob.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_54f0191420f8430cba7dd83f0cb81d3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_754389c3fe49474483e0c5960eceea09.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba8.bin
42e3783caedf448e14fcbc75b18e161657efc393aa677f58ca9a5bff480967cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA8 2988 bytes
font_01_sfnt_off00006659.bin
df3033ad49e8d1e4827bbdade73f3862ef03fb12eac80e96cb055d0edc8d92dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6659 5396 bytes
font_02_sfnt_off0000788b.bin
7314468edf169c5ea0827e51f116c04692f467984e7ccb3ec66a877dfbd75e3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x788B 10540 bytes
font_03_sfnt_off00009cc5.bin
b9a1d08a9df52f7e9e69a8534f4af2c061b8720a91faa4caf49a2536f42e4911
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC5 16148 bytes