Malicious PDF — malware analysis report

Static analysis result for SHA-256 44283259a4b2af7e…

MALICIOUS

PDF

66.0 KB Created: 2020-07-27 23:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a2e996de49eb03801fa619e89227565 SHA-1: a3a6daa7d778409538c77c64d3471f4906a2456b SHA-256: 44283259a4b2af7e8028ea3d829b2399b5ecd45e2b81de3ab3887d89ea2f0bb4
168 Risk Score

Malware Insights

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

The PDF contains a lure suggesting urgency and the need to install a remote support tool, likely to gain unauthorized access. It links to a malicious redirector at 'ttraff.ru' which is designed to lead users to further malicious content. The PDF also hosts a large number of links to other PDFs, potentially for SEO poisoning or distributing further payloads.

Heuristics 5

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=teamviewer+for+mac+os+x+yosemite
    • http://files.buildingmentalhealth.net/uploads/1/3/1/4/131408068/kadokokanobavirowe.pdf
    • http://files.decojewelry.net/uploads/1/3/1/8/131856200/6831911.pdf
    • http://files.ballyhoo.ca/uploads/1/3/1/4/131453944/8942757.pdf
    • http://files.hiringandhousingforum.com/uploads/1/3/1/8/131871919/2501130.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2119/files/rimokofepobukoregukena.pdf
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/38048159107.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/42802222887.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/gujef.pdf
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/89784915123.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/fagesul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/botivofuwiravuxogakez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/64367063668.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45366335679.pdf
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/nazavotoziw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/xipumimisojekozufi.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
stream_008_off0000d0f2.bin
f46245d7653bd21c6a9779bea56d65d2e6d5b4a2e3eda8953a639cd1d35389f2
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD0F2 23584 bytes
font_00_sfnt_off00009c5d.bin
f38d33463bed4f195292ea62be6624ead1079cd31082fa8abb9e059e0a591765
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5D 4948 bytes
font_01_sfnt_off0000ad4c.bin
b287493a213d07c31c8bf76a0164962ce30a80624549f7cec6cf845e073b33e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD4C 10388 bytes