Malicious PDF — malware analysis report

Static analysis result for SHA-256 c425260a44405cb0…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 15:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a195da9180b43e4eebde0e603831eb2 SHA-1: 444330fcddf3bb99c882d05734995864501e2929 SHA-256: c425260a44405cb056a896353a159130c0cb423df59398fbfa0f2f9a85d5321d
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector designed to lure users into clicking on a link disguised as a 'bank po detailed syllabus pdf'. The primary malicious URL identified is https://ttraff.com/pify?keyword=bank+po+detailed+syllabus+pdf, which likely leads to further malicious content. The document body is heavily obfuscated, but the presence of the malicious redirector and link farm strongly indicates a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=bank+po+detailed+syllabus+pdf
    • http://taxesowaw.whitetigermonthly.org/uploads/1/3/0/8/130874207/2aa2883.pdf
    • http://files.patrickboyle29.com/uploads/1/3/0/8/130814718/1753285.pdf
    • http://dunilix.mtcalvarylcms.org/uploads/1/3/1/6/131606490/5f0da9e65d5.pdf
    • http://files.studio-macs.com/uploads/1/3/1/0/131071166/6514521.pdf
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/17558667920.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/86837757883.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/42278148594.pdf
    • https://cdn.shopify.com/s/files/1/0439/1878/6728/files/99334693421.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/49200039320.pdf
    • https://cdn.shopify.com/s/files/1/0439/8913/9614/files/71762715127.pdf
    • https://cdn.shopify.com/s/files/1/0434/3224/7457/files/soporagixalari.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/tepijazonibimonemase.pdf
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/anti_rabies_vaccine_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/elementary_statistics_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/tedokuwep.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/bloodlines_book_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/litekerivekizuxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/tigusezabanapavixi.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_off00006001.bin
a1eb31d5c2d63ac9d21ac6edd72dabba4332466d14f270a9697eae6747841a36
pdf-font-stream PDF embedded font (sfnt) at offset 0x6001 5176 bytes
font_01_sfnt_off000071b0.bin
804a790905b55a102eefd16793e836b743875605705b4edc699e0e01dbd934c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B0 10088 bytes
font_02_sfnt_off00009403.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9403 4324 bytes