Malicious PDF — malware analysis report

Static analysis result for SHA-256 080d664578e5b93f…

MALICIOUS

PDF

39.4 KB Created: 2020-08-29 22:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec53812f012868f1999864e376ab9b83 SHA-1: ebb8870be5c816654734f82959c060fdd7f59074 SHA-256: 080d664578e5b93f91e1eadd49166ed884ea869ec731809d9fad2de6dafc7222
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely to manipulate search results or phish users. The embedded URLs, particularly the one to 'ttraff.ru', are suspicious and likely lead to malicious content. No scripts were extracted, but the document structure and embedded links strongly suggest a malicious intent to redirect users.

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.ru/wix?keyword=water+rockets+with+parachutes
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/13132378502.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/oxford_word_skills_basic_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/vilufekaxobuwekuj.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a844f21c1624ec0968bceebf0a1ccdb.pdf
    • https://static.usrfiles.com/ugd/b8c837_3544602e03e64af2b92d58f3b9961831.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cd13bab087b4980be4dcce38f1532d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d963c41c3254c718a19e9826dba365e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f726ef6f4fc4e1ab773155ee955dfe2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d444418520d14a84a5d78672c35875bc.pdf
    • https://static.usrfiles.com/ugd/738632_00c3456362544171841efc030e8643df.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_off00005d44.bin
90bd0766828747198cef456e17ddcdab1db1ce17f34856567c50d6fde1540e73
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D44 5160 bytes
font_01_sfnt_off00006ee5.bin
4558f7d657ed92b009c2077758cfd99108aeca70e64f477c1f300bed082d3fbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE5 10240 bytes