Malicious PDF — malware analysis report

Static analysis result for SHA-256 2567137b6873b832…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 10:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c27f48df50dc1bb1e3b2d9c541e9e420 SHA-1: e0a8b1637385d55a549362243a71535c63236c1e SHA-256: 2567137b6873b832c299898249ee710d39d2fe23e622a119b48c88113d593dee
160 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game download. The presence of a malicious redirector link and the remote support lure heuristic suggest an attempt to trick the user into visiting a malicious site or downloading further malware. No scripts were extracted from this sample.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.com/pify?keyword=3d+brick+breaker+java+game
    • http://files.richardsorabji.co.uk/uploads/1/3/1/4/131406592/3d87d1d3e.pdf
    • http://files.leapsandboundspt.net/uploads/1/3/1/8/131857120/vugumar.pdf
    • http://files.mostblessedtrinityacademy.org/uploads/1/3/0/8/130874281/887201.pdf
    • http://teveva.andrewedmundsprints.com/uploads/1/3/0/8/130814020/8f6ae.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/iron_maiden_children_of_the_damned.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/davoxufigutoruwozisame.pdf
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/business_management_syllabus_for_shs_in_ghana.pdf
    • https://cdn.shopify.com/s/files/1/0448/3540/5986/files/20643681454.pdf
    • https://cdn.shopify.com/s/files/1/0432/9108/2918/files/sowutokupazadalopurebujav.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/beauregard_parish_sales_tax_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/74442624394.pdf
    • https://cdn.shopify.com/s/files/1/0454/6409/2822/files/descargar_libro_de_armando_hoyos_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/64182776917.pdf
    • https://cdn.shopify.com/s/files/1/0437/4665/6408/files/teamviewer_7_for_windows_8.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/android_home_is_not_set_appium.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_off00005608.bin
b16fcda688f9ca45eb09bbeb03a426b92443b005b672a90dedfce8531166ee6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5608 5460 bytes
font_01_sfnt_off0000688f.bin
69d1fb15590fecdf0c73a42c46f8c9c3a714c13487080635127adfeaa872cc89
pdf-font-stream PDF embedded font (sfnt) at offset 0x688F 18772 bytes