Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be292422d9ab6b8…

MALICIOUS

PDF

31.9 KB Created: 2020-08-24 14:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63c07b8bac09c15106467d8f58ea627a SHA-1: 5c2c72e2b61b994bb0c4c499394fb3118b15e901 SHA-256: 9be292422d9ab6b8c9c636a5dfb898656d294f7decc644ce9648c70780c5ab7c
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at ttraff.ru. The document body, though obfuscated, contains the same URL, suggesting a lure to a malicious site. The presence of a remote-support tool lure further indicates a social engineering attempt to trick the user into interacting with potentially harmful content or software.

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.ru/pify?keyword=pyari+si+bitiya+ko+song
    • http://files.stmarkschapel.org/uploads/1/3/1/4/131483097/77ce89fde7c63.pdf
    • http://lafexavek.wakelandchoir.org/uploads/1/3/2/7/132712109/bugavogopoko.pdf
    • https://cdn.shopify.com/s/files/1/0430/1409/5001/files/wejefiwaxowamikeworakoniz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/teamviewer_apk_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/69078048752.pdf
    • https://cdn.shopify.com/s/files/1/0440/2121/9493/files/search_inside_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
    • https://cdn.shopify.com/s/files/1/0462/7221/7237/files/worodezotodativugojesewiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3813/7755/files/lateral_knee_pain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/zinc_plating_process_flow.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8489/files/52384307946.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/date_format_python_month_name.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_off000040aa.bin
12f4d2dc68a4edb7f3972a27d6c9ec027cde11935b4298e45ec5efb3ba96d8b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40AA 5128 bytes
font_01_sfnt_off00005232.bin
5d8af3a1b9e9dd96cf6f0be6120e31ff2c6057f9cd0a2ca9cda97f0bfeb02c87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5232 9228 bytes

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