Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78f60d955b6587…

MALICIOUS

PDF

35.4 KB Created: 2020-08-30 06:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9287c3371801a2a9dc1e56610a9887ac SHA-1: a61556b88920db9e465f7ab0748014b3b133a32a SHA-256: 6e78f60d955b65877d798e66fc167496009f40cf9bec13adb375f126fb61c6e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme designed to lead users to malicious websites. The ML classifier also strongly indicated maliciousness.

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=1747+aic+link+coupler+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/2ac701_6f2174a038ef4a439323785230393a05.pdf
    • https://static.usrfiles.com/ugd/4bb894_a2252a0b08484a0c87bbda99a4e1e593.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e30df528d5c4a059617592e02c5c9c6.pdf
    • https://cdn.shopify.com/s/files/1/0429/7244/6873/files/durable_power_of_attorney_illinois.pdf
    • https://cdn.shopify.com/s/files/1/0431/7816/4387/files/42468261056.pdf
    • https://static.usrfiles.com/ugd/764aaa_df4530ba67c14d73b4aa6a8b757266e4.pdf
    • https://static.usrfiles.com/ugd/0df15e_4126aa9a8f5e40c383007c8aa442f324.pdf
    • https://static.usrfiles.com/ugd/b8c837_03f51cecd1f14850b602826146c68541.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/30315700999.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/ragenevu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/67601752249.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d22.bin
66716290f06f67dbb8c491312580d124d6dbb77959d48fa865e9b00024086251		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D22 5088 bytes
font_01_sfnt_off00005e62.bin
a95e08dad985d215c051c550af0a290feb9b7d2cf986e6f8e3e66aeeef8048ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E62 10288 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.