Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff2d60df6001536…

MALICIOUS

PDF

66.3 KB Created: 2020-09-01 04:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7246f5910217830804c077502dd33a1a SHA-1: 0cee36649ae47009ca178f7cc4b31ed897e3a631 SHA-256: dff2d60df60015361c173db9a7c14eb8bf1094064c2ff01771e6a61001eb6959
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.ru/wix?keyword=cognitive+distortions+examples+worksheet'. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also exhibits characteristics of a PDF link farm, with numerous external links.

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.ru/wix?keyword=cognitive+distortions+examples+worksheet
    • https://static.usrfiles.com/ugd/b8c837_30b292b0029d45a89908cbc89b7934d9.pdf
    • https://static.usrfiles.com/ugd/8127dd_5e0ab3ff59da457a991bdb273c329b04.pdf
    • https://static.usrfiles.com/ugd/b3bc21_38645a95f4c34b7f9912f9d3514c704b.pdf
    • https://static.usrfiles.com/ugd/0cd019_503649cbe5604db3a4c62757f65862af.pdf
    • https://static.usrfiles.com/ugd/11f207_0e55360f23474d228416747093298720.pdf
    • https://static.usrfiles.com/ugd/162fe6_e990868bba60459fa1e4fd46fc317a65.pdf
    • https://static.usrfiles.com/ugd/912de2_a2261f87dbd743c1891ee819fc2e8577.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/3498180552.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/45085699794.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/tournament_bracket_generator.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/vonukuxujazifiba.pdf
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/paturozibijuzovox.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/bootstrap_audio_player_with_playlist.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_off0000c5e0.bin
7160e1fb40bae73a9f8a3f840e4dbb946a72358285559d1a86426a4c2b291a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E0 5564 bytes
font_01_sfnt_off0000d8b9.bin
a5da526b6f5b7df038c727f43216946e1bf72d3d3d2ec42d216bfb831dfdbea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B9 10304 bytes

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