Malicious PDF — malware analysis report

Static analysis result for SHA-256 276ea22d85154475…

MALICIOUS

PDF

48.5 KB Created: 2020-08-11 19:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ede61b32451d8da15e6eb7d8d08d374a SHA-1: ffb6b77470e95b4d72573de5363fc933c727c311 SHA-256: 276ea22d85154475a4a1ae439e8e5138e13782ac911f23c1dfb8e737647bf65f
130 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as an admission form. The document also features a link farm pointing to numerous PDFs hosted on Shopify, with one specific PDF being identified as a potential lure. The presence of these links and the 'urgency lure' heuristic suggest a phishing or redirection attempt to deliver 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.
  • 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=mscit+admission+form+2020+pdf
    • http://lopekuvu.sandieboxerkennel.com/uploads/1/3/0/7/130775403/7735145.pdf
    • http://jamur.tahoesacredvows.com/uploads/1/3/1/6/131637419/5642726.pdf
    • http://files.freshkratom.org/uploads/1/3/0/7/130775970/6102307.pdf
    • http://files.lilgothlivepicture.com/uploads/1/3/1/3/131383837/8ae3eceba721f.pdf
    • http://files.arkansaspastelsociety.com/uploads/1/3/1/4/131411474/4272817.pdf
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/nolukexirapesajonotamuxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3337/0529/files/65698775120.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/83879009917.pdf
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/64939114949.pdf
    • https://cdn.shopify.com/s/files/1/0438/7163/3563/files/sades_sa_902_driver.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/pevojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/24732450052.pdf
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/fosovizedipukojarolupito.pdf
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/sejogusupevixon.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/lupepeduvusowixotenanej.pdf
    • https://cdn.shopify.com/s/files/1/0437/7742/5557/files/adobe_pro_free_download_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/29175844760.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_off00008040.bin
4456fa5633f6d93c0bb4b9b11e185161cbce1fc669c64afee98598273cdf87b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8040 5548 bytes
font_01_sfnt_off00009302.bin
d330c48cc279c0b90636e308ffa9bd54dc433b6e77f37c9179f017c5822a8747
pdf-font-stream PDF embedded font (sfnt) at offset 0x9302 9952 bytes