Malicious PDF — malware analysis report

Static analysis result for SHA-256 589394c4ed6a1382…

MALICIOUS

PDF

48.1 KB Created: 2020-09-11 21:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9924da13f9add32ac2e25f171902c0 SHA-1: 9de33f3226d970cca588425d124dae81968593f7 SHA-256: 589394c4ed6a1382cf85d2eec61a427be0936fd0c11574665947195a1c546122
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure for a disciplinary hearing form template, aiming to trick the user into clicking a link. The embedded link `https://ttraff.link/wix?keyword=disciplinary+hearing+form+template` is identified as a malicious redirector. The file also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse to obscure the final malicious destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=disciplinary+hearing+form+template
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/the_outer_limits_season_2_episode_17.pdf
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/kajominawufulisekepok.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/bikubanugiweli.pdf
    • https://static.usrfiles.com/ugd/ae15ca_d5436c9aad28474b8a5740dc20da446c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2876952825b457697e95e261c323dd3.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/microsoft_office_for_mac_free_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0438/3683/3954/files/91197637049.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/6540593160.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8545/files/mapojazowu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7445/2632/files/linofegamigusijavini.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9100/files/kezefimob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072a0.bin
9886e40a348436ff95b7fbdeb17d311417cf2b348be80d971252cd8a0ca71afd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A0 5316 bytes
font_01_sfnt_off00008486.bin
d6196b7441aa11c4352e4c917caf60ecc59a92f7463c9216e8cc9af5202973f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8486 9672 bytes
font_02_sfnt_off0000a5a0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A0 4324 bytes

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