Malicious PDF — malware analysis report

Static analysis result for SHA-256 960841fa41be490e…

MALICIOUS

PDF

60.4 KB Created: 2020-08-31 19:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4afbaa8b5ae67d63b87e7a66a19dce35 SHA-1: 2dcbcd91d3882aeb3d89a07537ac4b10d2fed8a3 SHA-256: 960841fa41be490e9f45ad7a02bbd92773668d40d2b0f90ecfb2f482c819fa14
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to an 'aiou challan form' and includes a call-to-action phrase. It embeds numerous links, with one identified as a malicious redirector pointing to 'https://ttraff.ru/wix?keyword=aiou+challan+form+for+reappear+in+workshop'. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO abuse. 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=aiou+challan+form+for+reappear+in+workshop
    • https://static.usrfiles.com/ugd/b8c837_74f4684f5dc84c7a89e180f3b0e84c5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_fff7a2b6cdc04b4a86919b16fa7089a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_38cd90dd58504d1fadfffde7be757e50.pdf
    • https://static.usrfiles.com/ugd/b8c837_afdb3d355c084b6fbd9f6a0f8fc19043.pdf
    • https://cdn.shopify.com/s/files/1/0465/5097/4614/files/cisco_firepower_4110_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/astral_projection_guidebook.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/jozujamuwewunubudoxan.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/open_condom_star_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0241/files/alkenes_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/mimovizuselevutawisale.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/57770462823.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/diniga.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9812/files/65428786323.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/valaperutomelo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9907/files/52258919747.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_off0000a58f.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA58F 2828 bytes
font_01_sfnt_off0000af8a.bin
1471dc5bfa670911f7815d1825667b20e79987ce0098604ef6b1577db86fecbb
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF8A 5400 bytes
font_02_sfnt_off0000c1d1.bin
4ab4f91b0def45e3845742afd4e49998b6e18bc29d5ace8354d4edd0b5ee52c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D1 10120 bytes