Malicious PDF — malware analysis report

Static analysis result for SHA-256 594a21009a3666de…

MALICIOUS

PDF

41.2 KB Created: 2020-08-03 01:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e8498e60ff9267b0721f41c90b61ffe SHA-1: 43f60f0b26449f9ce706e4807778c1d748e27c1e SHA-256: 594a21009a3666dea4d49dca0f9e7ccfd51f92d2043bcddcacfed0991d78d99a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a link disguised as a "2017 toyota tacoma owners manual" that redirects to a malicious URL (https://ttraff.cc/pify?keyword=2017+toyota+tacoma+owners+manual). This URL is identified as a known malicious redirector. The document also functions as a link farm, pointing to numerous other PDF files hosted on Shopify, likely for SEO manipulation or to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious.

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=2017+toyota+tacoma+owners+manual
    • http://files.shoreexcursionspuertoplata.com/uploads/1/3/2/7/132740620/pinupivuvojujoxa.pdf
    • http://files.southwoldholiday.com/uploads/1/3/0/7/130775245/sigose-vizad-timewutowa.pdf
    • http://files.coloradomineralandfossilshows.com/uploads/1/3/1/0/131070799/girapojizura.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/lotoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/1743020417.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/2003_honda_element_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/60140125457.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/73191936835.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/nufureso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34007074416.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/16013601812.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/74829455148.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/gepofapugevifuw.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061d8.bin
08c7d59f74212a74cb4cc17e57a6def0a95f890576364f43cd82879714bca650
pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 5448 bytes
font_01_sfnt_off00007463.bin
52735805fb1dcdb1ae7d632efadc31b3aa9ea601a000497e19ecf177a284e950
pdf-font-stream PDF embedded font (sfnt) at offset 0x7463 10472 bytes