Malicious PDF — malware analysis report

Static analysis result for SHA-256 2363fbae21a20961…

MALICIOUS

PDF

38.3 KB Created: 2020-07-30 19:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cb5325da949233577b761972b26b7a8 SHA-1: 78b7fdafd219fb8f62c5d6174b4c31e570407ecc SHA-256: 2363fbae21a20961d7be51252f40c523e814930e2580c45bdcdcad4e69397483
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/pify?keyword=bios+instant+notes+genetics+pdf', is flagged as a malicious redirector. The document body is heavily obfuscated and does not provide clear textual content, but the presence of numerous external links strongly suggests a malicious intent, likely to drive traffic to compromised or malicious sites.

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=bios+instant+notes+genetics+pdf
    • http://files.nigerianwriters.info/uploads/1/3/0/7/130775011/tonasov.pdf
    • http://files.dreambiztestdrive.com/uploads/1/3/1/0/131071114/497532.pdf
    • http://files.ruthstoneartist.com/uploads/1/3/0/7/130775346/zavotesadigifopo.pdf
    • http://files.drawingthelinewithlove.com/uploads/1/3/0/7/130738622/xukumaruvoke_sumujivigowesij.pdf
    • http://files.lafayetterealestatehomes.com/uploads/1/3/0/9/130968950/097a7521910ba9.pdf
    • http://files.ruthstoneartist.com
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/67594518958.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/20714957271.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/42901313210.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/22525238861.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/24259933629.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/25293233051.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/39574643718.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/82813801044.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/zatilupubuduzixegaloluxop.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/rikegedonejafipupudunezal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/17051775062.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_off00005a4c.bin
a6079f42663e8fbb97b5e2316c25491eba738270ed8e8b6149eeb7e08c506f83
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4C 5032 bytes
font_01_sfnt_off00006b7e.bin
6182c0ff6ba772c8b5212c3caa484ad3a8e7ebe192d7175eca38ffc5e110832a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 9484 bytes