Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a12c6461d7138a0…

MALICIOUS

PDF

49.1 KB Created: 2020-08-10 10:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae71d9cc7c34ee5688ebd5fa66d90fd SHA-1: 05a8f4ebba9ea2c30d8888b181472a59cadc3a6f SHA-256: 1a12c6461d7138a032b359b85e1d07dc42c20925c66f14d800729d67586b8ca7
128 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with many embedded URLs pointing to external PDF files, likely for SEO manipulation or to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=borrowers+and+lenders+act+ghana+pdf`. The document body, though heavily obfuscated, contains references to 'Borrowers and lenders act ghana pdf', suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=borrowers+and+lenders+act+ghana+pdf
    • http://files.soapbarlounge.com/uploads/1/3/0/7/130776718/luriza_bokitewakikizu_sepipe.pdf
    • http://files.muonhunter.com/uploads/1/3/2/7/132740949/c0003c60710.pdf
    • http://files.parkcitybrewery.com/uploads/1/3/2/6/132695258/rudilawebizokukor.pdf
    • http://files.csaracampbell.com/uploads/1/3/1/3/131398477/01f44f074e0be.pdf
    • https://cdn.shopify.com/s/files/1/0432/7014/4166/files/ligavevenosejafukitiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/3514/0007/files/my_silver_lining_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/41471609369.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/tadejokoxuxapokiraj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2485/0842/files/94313234445.pdf
    • https://cdn.shopify.com/s/files/1/0434/9001/7430/files/puwekiralisobadifutokinek.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/zero_dark_thirty_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/rejujejokuvafewotojiza.pdf
    • https://cdn.shopify.com/s/files/1/0436/6509/6857/files/el_autismo_libro.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/95301087136.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/95094969817.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/24711982912.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_off000081a2.bin
6986bbc5dd83df644e1038fd51f39cf5291de46b6bd45d4ca487486b32697b9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x81A2 5556 bytes
font_01_sfnt_off00009499.bin
f1ee2fa2c6759c13394ca3a8370d2a4bafd06ca17f76926dcc83230de44cc73c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9499 10204 bytes