Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d075d6844a9fe9…

MALICIOUS

PDF

34.2 KB Created: 2020-09-02 05:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 969b0c3fb2bd68fa3787b395994f486b SHA-1: e9aef45d1ebafa5ff4c3ab1973fc55e1241364a0 SHA-256: 84d075d6844a9fe9d64f0ba734d95c17884b187967d7b30ecd39da5482583aab
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. Another heuristic flags a link to a known malicious redirector. The document body contains garbled text but also includes the URL https://ttraff.club/wix?keyword=motu+patlu+katun+video++3gp, which is flagged as malicious. This suggests the document's primary purpose is to host a link farm for SEO manipulation or to redirect users to malicious content.

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.club/wix?keyword=motu+patlu+katun+video++3gp
    • https://static.usrfiles.com/ugd/5af86b_3edebcc8876a42b88ad7cf0ca343c380.pdf
    • https://static.usrfiles.com/ugd/a2e20a_f1bf565bed95420dafb8ae9806fddcb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d36f160296b48f5a4eb1185357e8ee0.pdf
    • https://static.usrfiles.com/ugd/97493d_dd53b2730c234b6fb0abafb33349fa87.pdf
    • https://static.usrfiles.com/ugd/9219f8_2453c8ecdecc48e29341ec16c1a1893f.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/calligraphy_gothic.pdf
    • https://cdn.shopify.com/s/files/1/0440/4976/0421/files/division_worksheets_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0435/4732/8664/files/halloween_owl_android_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/tikomotovenegekowixobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8484/9045/files/set_transaction_isolation_level_read_committed_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4167/files/40789995582.pdf
    • https://cdn.shopify.com/s/files/1/0459/2553/1815/files/55408014747.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/93218171348.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/44848868506.pdf
    • https://cdn.shopify.com/s/files/1/0428/2001/0140/files/dragonballz_flash_game.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_off00004811.bin
fc158915516d63c962564bd7868f75bcc7a863fe121755d116e8b97a21549fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4811 5148 bytes
font_01_sfnt_off000059be.bin
7942cc544759f248b3bc9d1578ed628196ffebea34371a24bb9f7b142392c524		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59BE 10488 bytes

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