Malicious PDF — malware analysis report

Static analysis result for SHA-256 e601fa242e44e714…

MALICIOUS

PDF

40.7 KB Created: 2020-08-13 22:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 424542b0ac69505eb254960a3bed759f SHA-1: f950e8129d2e5a95bb67f81fa39cfc53d8a645f9 SHA-256: e601fa242e44e71402d6111a6fa284f69377bb70dd6d1165d10b3cee369814fd
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though corrupted, contains the URL that triggered the redirector heuristic. The primary attack pattern involves directing users to malicious infrastructure via a link farm, likely for SEO poisoning or phishing purposes. No scripts were extracted, limiting the analysis of further stages.

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=silicon-+germanium+heterojunction+bipolar+transistors+pdf
    • http://files.listentomypodcast.org/uploads/1/3/1/4/131438313/7bc60bca.pdf
    • http://files.createleadersnow.com/uploads/1/3/2/7/132712268/dadofifini.pdf
    • http://xuminepag.robynfraser.com/uploads/1/3/2/7/132741555/vidalokefomerut.pdf
    • http://files.emilyblueb.com/uploads/1/3/0/7/130775834/zifurororuwuzu_fimevuxeru_pupinew_gutavosotivojaz.pdf
    • http://files.inspiredmusic.us/uploads/1/3/0/9/130969454/da2e4f.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/meredith_bernstein_literary_agency.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/notadenagefajofakiwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/17791384993.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/39866100.pdf
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/99623300230.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/32717649582.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/22639744715.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xedatojif.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/ragepimezevodabixefumalul.pdf
    • https://cdn.shopify.com/s/files/1/0430/5630/0185/files/effectiveness_defined.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5519/files/anamnesis_fisioterapia_formato.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/30190448581.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_off000050f8.bin
be91e0c75fe1ffb9a23d1a2202241e606d11bdd53754687a9109959f888631ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x50F8 5800 bytes
font_01_sfnt_off00006476.bin
5b72de3118afa9e93017f8a0175a37ca74de5e2c276f24c062859bf505c33bdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6476 10104 bytes
font_02_sfnt_off000086fd.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x86FD 4324 bytes