Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1022be431ef0fcb…

MALICIOUS

PDF

54.5 KB Created: 2020-08-03 13:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71b331451b0041f7a837778deb6f66d8 SHA-1: 42c69aab4d8d47e4955a7b3bbaf62cc9eec1f3fa SHA-256: b1022be431ef0fcb99c7b118dbb1f505d3d92dfc22aff17c295af2b5e911e147
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to a 'paramount bank reasoning book pdf'. The presence of a 'SE_REMOTE_SUPPORT_LURE' heuristic further indicates a social engineering attempt, likely to trick the user into downloading or interacting with further malicious content.

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.cc/pify?keyword=paramount+bank+reasoning+book+pdf
    • http://files.tilliesnevada.com/uploads/1/3/1/3/131379612/xapixivote-pipugu-neruxesivalu-wifuf.pdf
    • http://files.youthartscenter.org/uploads/1/3/0/7/130776864/bcff11533aa89eb.pdf
    • http://files.uthrive-in-unity.com/uploads/1/3/1/8/131856109/1589687.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/15398195414.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/89702154679.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/23198689573.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/pametasajezemanamefikare.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/83180692551.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/64519268739.pdf
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/28837959697.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/valedezuxokigalilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3481/files/92029405246.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b47.bin
6610b2e2e2516201de95df56b457288b4aadfb3810966a8a96d9168bb3b3ccdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B47 5416 bytes
font_01_sfnt_off00006d94.bin
0ba8ce35dfc5554bd797df66a5581572e81963b04d5077586b40269d82447059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D94 10260 bytes
font_02_sfnt_off000090f0.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90F0 16164 bytes
font_03_sfnt_off0000a608.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA608 4324 bytes
font_04_sfnt_off0000b407.bin
afc7c32a2f9e13472f9eb88cf16234dc031ff84ab0786c6a8be9a868d3528a63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB407 6444 bytes

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