Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5d20696e2afcf2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 12:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91cbb7110bc27084c1ba03e457ba0799 SHA-1: e7bf0aceccbef3d588d105cb14a24c12e7880b82 SHA-256: af5d20696e2afcf269df7781341927a6305581a5425d37bfcd48b46722aff7d1
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, masquerading as educational material, to a known malicious redirector. The primary link directs to 'ttraff.com', which is flagged as malicious. This suggests the document's purpose is to lure users to a malicious website through a deceptive link, likely for phishing or malware distribution.

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=englisch+abituraufgaben+mit+l%25C3%25B6sungen+pdf In PDF document text
    • http://files.maryfarrfineart.com/uploads/1/3/1/3/131381237/fusakexumomibe-towadikide-reridexujulal.pdfIn PDF document text
    • http://molidumo.mingwongdesign.com/uploads/1/3/1/1/131164312/5b14f562.pdfIn PDF document text
    • http://files.eringilbreth.net/uploads/1/3/0/8/130813694/ditejevikigokoxumegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5075/2417/files/coeur_de_lion_ariana_reines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/71714645032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/56148967407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/42553314841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/capital_markets_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4817/3722/files/bigilumixikelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/werodarix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6263/5168/files/sawifidojodasazuviwuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/82968762531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/65569883663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8601/0776/files/72477060520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/brief_history_of_neoliberalism_david_harvey.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b5.bin
4734991500df45363719f7dbb42df0ced13b283a62e3edcbd09fb975d9d2dc2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B5 5804 bytes
font_01_sfnt_off00007803.bin
cbcb4cb34cf2a37ccaaea7a4eebd3620c9ac68fa4c70ce0c7880bcfc68d46ff1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7803 12136 bytes