Malicious PDF — malware analysis report

Static analysis result for SHA-256 216c84655ecbf2c7…

MALICIOUS

PDF

40.4 KB Created: 2020-08-30 10:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 223c9aaf290baddb8ac543683c694f5e SHA-1: ee61e03f166a325b216bf341a541dc36404578d5 SHA-256: 216c84655ecbf2c7b2f1c6c94a238583d61dffb992431f4e0da45c7ac37867fd
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, creating a link farm. One prominent link, however, directs to 'ttraff.com', identified as a malicious redirector. The document body, though partially corrupted, contains keywords related to a turkey fryer manual, likely serving as a lure. The presence of a malicious redirector link and the link farm technique suggest an attempt to drive traffic to malicious infrastructure, potentially for phishing or malware distribution.

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=butterball+xl+electric+turkey+fryer+manual
    • https://cdn.shopify.com/s/files/1/0431/7167/6314/files/fokadu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1989/3927/files/35394216832.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8753/files/gimuradavakigi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8427/4081/files/lotigutijavabigozorabe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/96190489498.pdf
    • https://static.usrfiles.com/ugd/b8c837_45eea6fc25a44ca69e9ed652ba3cb6c1.pdf
    • https://static.usrfiles.com/ugd/2f07a1_6bef3d5c561b4da7ba20c4b0fa96c83f.pdf
    • https://static.usrfiles.com/ugd/a44510_c98357687f3d43a48c94a9ddbd926fca.pdf
    • https://cdn.shopify.com/s/files/1/0431/4041/5644/files/reselemufiwufolodod.pdf
    • https://cdn.shopify.com/s/files/1/0441/0291/0104/files/ac_120_76d.pdf
    • https://cdn.shopify.com/s/files/1/0435/3903/8359/files/25539929220.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/master_of_business_administration_books_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a4.bin
82c994c20161add200a93a25ae555edeaf07653aeb74925acc4dd852380e315a
pdf-font-stream PDF embedded font (sfnt) at offset 0x50A4 5044 bytes
font_01_sfnt_off000061c4.bin
91b2870fae466e8441948509af7ad7237a477962de64bd1dffba195bb6587d4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x61C4 10284 bytes
font_02_sfnt_off0000848b.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x848B 4324 bytes