Malicious PDF — malware analysis report

Static analysis result for SHA-256 425ae85c5ee4853e…

MALICIOUS

PDF

39.2 KB Created: 2020-08-31 22:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aba909d8d9f6312013a312fa2452cee SHA-1: 778e2af787f0ba53d65dd33a28a157fa34dd6f4d SHA-256: 425ae85c5ee4853edbf3e4ecab42d20e3ae698194cf884b2f0df3e8de20926d0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=amazing+spider+man+gameloft+apk'. This URL is used in a lure to trick users into downloading a game. The document body, though heavily obfuscated, contains references to the game and the malicious URL, reinforcing the phishing attempt. The file also contains a large number of embedded links to external PDFs, suggesting a link farm or redirection strategy.

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.cc/pify?keyword=amazing+spider+man+gameloft+apk
    • https://static.usrfiles.com/ugd/b8c837_39b8b4365f7e4d7295fc93e10f219f40.pdf
    • https://static.usrfiles.com/ugd/b50c55_57ba0c2b72a740aea2de0bfcf2078ca8.pdf
    • https://static.usrfiles.com/ugd/b0b521_a1e3d0dafabc46b98ec353ea0f9addbd.pdf
    • https://static.usrfiles.com/ugd/c1615c_661f0ee266b34a8da3ec3a7cafb0c6ef.pdf
    • https://static.usrfiles.com/ugd/c0b427_be3648fc95354b16aff03d8a882b14ac.pdf
    • https://static.usrfiles.com/ugd/f55bec_9d72ee59b3354583a6d97bdd210fa14d.pdf
    • https://static.usrfiles.com/ugd/99965f_e6f7dd639d504ef0bd426f4f4823ad64.pdf
    • https://static.usrfiles.com/ugd/b8c837_99ba59804ab64eb4abdcbe0392892358.pdf
    • https://static.usrfiles.com/ugd/d775a9_6eb186cf38bb4906bed4592b00824a76.pdf
    • https://static.usrfiles.com/ugd/e5a943_85ca99ee3b444c119ae515e870821aa1.pdf
    • https://static.usrfiles.com/ugd/d2cc1f_f35fd5398eb24716bcdff76b018cb2cc.pdf
    • https://static.usrfiles.com/ugd/39cb9d_15108ae2dd4847ffb5a5c62e09dc35fb.pdf
    • https://static.usrfiles.com/ugd/5de1df_3994ab8a31cf49ec914e6cb6ef755df0.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_off00005ae1.bin
6a9085384bc7345e9ee484937794b1de97036ec0e1eeb0d61c3e601118fdf753		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE1 5464 bytes
font_01_sfnt_off00006d6c.bin
ee61967013f1e97863d0d8292146fe7708c30c92b7332d7ac28f85ec5707f238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6C 10308 bytes

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