Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27cf6c0c8a1e816…

MALICIOUS

PDF

38.5 KB Created: 2020-08-14 07:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44b8bc638b623ec796f0b3666f81d7a6 SHA-1: 93ea98024352644260c9095a976496ca4c91ea1a SHA-256: a27cf6c0c8a1e8162ada06b8b4a408251934bb0cb25825798f307b548d94ef7a
120 Risk Score

Malware Insights

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

The PDF document contains numerous links, masquerading as sheet music, that redirect to a malicious URL. The primary malicious link identified is https://ttraff.ru/pify?keyword=defying+gravity+violin+sheet+music, which is a known redirector. The document's structure and embedded links suggest a phishing or malware delivery attempt, likely aiming to lead the user to a compromised site or download a secondary payload.

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/pify?keyword=defying+gravity+violin+sheet+music
    • http://files.ctc1990.com/uploads/1/3/1/8/131856907/6e4827.pdf
    • http://files.savecockatoos.org/uploads/1/3/1/3/131384436/6016423.pdf
    • http://sizire.dalesdesignsonzazzle.com/uploads/1/3/1/6/131636725/towalinakub.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/45677051523.pdf
    • https://cdn.shopify.com/s/files/1/0432/8030/2240/files/91062204112.pdf
    • https://cdn.shopify.com/s/files/1/0432/7492/8286/files/calgary_bus_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/73252406909.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/wilasexumizagukegegisugoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2623/4009/files/komonatepitamukobisosadud.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/nafelemozavejav.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/tujarifurawozilobijelod.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/poptropica_sharktooth_island.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/74491240999.pdf
    • https://cdn.shopify.com/s/files/1/0432/6621/2003/files/98902083456.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/utilisation_du_bicarbonate_de_soude.pdf
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/13937013976.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_off00004a8e.bin
8c2877d7480773fe857d427f57dafbe1241a4c1fd3c0daf6e679757388ffcd86
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8E 5340 bytes
font_01_sfnt_off00005c9c.bin
2383dfb1c0b9c9db5d7da32b17d1f7504b2b950adfdc6f7fc9caff2bb52cd5c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9C 10176 bytes
font_02_sfnt_off00007f36.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F36 4324 bytes