Malicious PDF — malware analysis report

Static analysis result for SHA-256 07936f97276147af…

MALICIOUS

PDF

44.1 KB Created: 2020-08-30 01:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 974f5bfe2648ac51edfc225fc21bf7bb SHA-1: c35bd6d89c4ba27ab755ea8a40ba352786ee4fce SHA-256: 07936f97276147af7715c05562e96948cb9e8cad73faec355aee41bd78817faa
154 Risk Score

Malware Insights

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

This PDF document contains a link disguised as a '2005 toyota camry owners manual online' which redirects to a malicious URL. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL is a high-confidence indicator of malicious intent.

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=2005+toyota+camry+owners+manual+online
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/3bca44_9c11fcae5cef4487bb138f215afda1a4.pdf
    • https://static.usrfiles.com/ugd/39cb9d_6a2b9392c91e4da788ec9d54f5cf9cba.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff238bc9a5d74139b1572a6204f549ea.pdf
    • https://static.usrfiles.com/ugd/429b25_f0703aba73c743ae91fcee3d8c039382.pdf
    • https://static.usrfiles.com/ugd/58a813_61410604cf004a1c9c6de90b69e95def.pdf
    • https://static.usrfiles.com/ugd/b8c837_c89d68849be6470da648a9c094566a68.pdf
    • https://static.usrfiles.com/ugd/06497e_6d8d179e7b824757843e3215b820d5f3.pdf
    • https://static.usrfiles.com/ugd/b65acf_c36963fe439b417a838114b89644a6f5.pdf
    • https://static.usrfiles.com/ugd/856cea_6966a082820f406db26fa505b10d5f88.pdf
    • https://static.usrfiles.com/ugd/accd1f_3298d6efb4db41c594e3ddb298864413.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dae9b710cb74eef81b00a83a76f1166.pdf
    • https://static.usrfiles.com/ugd/05900a_915c435854024035aa33d27c64442101.pdf
    • https://static.usrfiles.com/ugd/b8c837_869f289aadad4a5c8a6094dccc426d03.pdf
    • https://static.usrfiles.com/ugd/ec0c41_8a39b571e6ae401ab75a5f57da9f122b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6252531bfb004cc1b1ba6907739b1cee.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_off00006df9.bin
0d0ec78db282c462da6b1939cf5ac0904675ebaeb1c0344bbaf7a8b591af4559
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF9 5444 bytes
font_01_sfnt_off0000806b.bin
bb9cde72d36e4e74a4d508edd740cb5767ce9deaa1e59dc7eabbb84770794b75
pdf-font-stream PDF embedded font (sfnt) at offset 0x806B 10348 bytes