Malicious PDF — malware analysis report

Static analysis result for SHA-256 5255ba6d518d204c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-29 11:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b495aadb1d9a4512935a92017e552f6f SHA-1: 265e07f3df5a41c2ed077025689e234fa7f0a675 SHA-256: 5255ba6d518d204c61675248d1c66cda9b023606298122304881dfaf27b3273a
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of a link farm suggests an attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/wix?keyword=toyota+tacoma+automatic+transmission+problems
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/bittorrent_movies_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/79405673660.pdf
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/daluvobajofali.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1687/files/54105466129.pdf
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/37322325143.pdf
    • https://static.usrfiles.com/ugd/b8c837_b233a127ca7a404c81368c1b0ebe395c.pdf
    • https://static.usrfiles.com/ugd/b8c837_0202632f4e124db693db91f62f856c52.pdf
    • https://static.usrfiles.com/ugd/b8c837_67a9bffd64ba4c47a0ae4059a4a2de88.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f676f4ff3d146058fef31fa5db7fc70.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/67889106277.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1517/files/66245958623.pdf
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/suwusikaxirowopimi.pdf
    • https://cdn.shopify.com/s/files/1/0457/4652/0220/files/bitdefender_win_7.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_off000060e8.bin
2a39ee3d3235aa3494fdc44c7fce9367e126e740d8dbaf9432d5eee2dc447939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E8 5268 bytes
font_01_sfnt_off000072c3.bin
0de93dfcf899db6e519d8cf506b535c45b81f4a0b8a6b551208c5bb3d4661887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 10116 bytes

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