Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6c17a84bde58dc…

MALICIOUS

PDF

46.2 KB Created: 2020-09-01 09:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15d6adfd07c4f54c7ae3358b29555b97 SHA-1: e0423ed2034cd0216ea99eaedc3bbda3b0aec75b SHA-256: 2a6c17a84bde58dcca421357d7c530e44efd1da0d150ba9d6eac0a3f9b188485
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be a link farm designed to redirect users to malicious infrastructure, specifically identified by the ttraff.com URL.

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=catenary+arch+form
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/bakafatavijividivamosipuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/philadelphia_phillies_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0436/8944/3483/files/free_new_punjabi_audio_song.pdf
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/wirudajaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/sederirotorugixogeredu.pdf
    • https://static.usrfiles.com/ugd/5a1791_6675210d88bf49e1b3d486743cb16d17.pdf
    • https://static.usrfiles.com/ugd/b42fd6_0fcdbc8a21644dcea39fdb03a566e6fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_15f4411b1b23475ca41555fa8aed14fd.pdf
    • https://static.usrfiles.com/ugd/5be868_18b4a3c23185410d9ba004c2adc4854d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5dee3ed256d4d3ba68fd5e3a17e7059.pdf
    • https://static.usrfiles.com/ugd/9ea91e_9958c40947f44456b5b622d7a3faaa6f.pdf
    • https://static.usrfiles.com/ugd/bb13a2_f6487a6197fc4847b11d3685eaf62b6e.pdf
    • https://static.usrfiles.com/ugd/89c6ad_9f96bf77778249039fcdc04b063f4ef2.pdf
    • https://static.usrfiles.com/ugd/97368a_01d5d0d62fbd4723855c3fd1ddaba36e.pdf
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/muwato.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/buvofarukaripiroru.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/54419946924.pdf
    • https://cdn.shopify.com/s/files/1/0432/2361/3595/files/nonoxarokeze.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/47781804798.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_off000078ae.bin
56abd783b3b62d9dec6c797b0cb0809631754e3508eeff81ef20e19d39e96ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AE 4920 bytes
font_01_sfnt_off0000894a.bin
89e0136c59cc8e71fba54b6b67bea8807b95a6a63b1d58fc65c1641f3fa907f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894A 10008 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.