Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe013430ad471db6…

MALICIOUS

PDF

90.3 KB Created: 2020-08-23 17:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eca4c6aa8dcbd32d1e232122122cfa7c SHA-1: 477c0dc69d9aa575517c6a02db471a3f6e361079 SHA-256: fe013430ad471db693a09d446eec737c71fe2d203410bad696420fa2e8ad3a02
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or traffic redirection. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics and IOCs. The primary intent appears to be directing users to malicious infrastructure via a deceptive link.

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/pify?keyword=catalyst+2960+x+spec+sheet
    • http://files.rrmusicclub.com/uploads/1/3/0/7/130775368/0a8238e5cb486.pdf
    • http://files.pmehard.com/uploads/1/3/0/7/130775970/banasiziwenajazisibo.pdf
    • http://niwatudu.charlaphysed.com/uploads/1/3/0/9/130969426/2866157.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/9883877222.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/tonipuvej.pdf
    • https://cdn.shopify.com/s/files/1/0463/2723/4722/files/cuneiform_cataract.pdf
    • https://cdn.shopify.com/s/files/1/0457/6883/5228/files/joberudenadileximuzala.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/bubutalusebaxabuzenibetup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/63312737981.pdf
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/diweputofisabad.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9725/files/zimanulozupejugofibebufav.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/reduce_illustrator_file_size.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5149/files/birds_full_hd_wallpaper_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/fazaxisodekinibexeti.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_off000114ae.bin
7e725ae21a68762d3643de07810e01526cf0dcbbadae1736e959395bdd9c96d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x114AE 5584 bytes
font_01_sfnt_off000127a3.bin
ab951865ba56ba95100bb7aba3b23a2be32c9591143515e9f4e38ef1245da4af
pdf-font-stream PDF embedded font (sfnt) at offset 0x127A3 16684 bytes