Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4515dad2af27089…

MALICIOUS

PDF

48.6 KB Created: 2020-08-06 23:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 582f0a6913d44e5c4360f797d36a5a4b SHA-1: ff797e3ba53f933b5153970c46ebc3551a0df707 SHA-256: e4515dad2af2708903485c8996b5e89d201a722b2bd8e982fe171010e6f0f134
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL is https://ttraff.cc/pify?keyword=orthographic+drawing+book+pdf, which likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to the redirector URL and numerous benign Shopify URLs, suggesting a tactic to disguise malicious activity within a large number of links.

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.cc/pify?keyword=orthographic+drawing+book+pdf
    • http://mabizugi.43designworks.com/uploads/1/3/1/4/131407005/janenaf.pdf
    • http://files.iconbiketours.com/uploads/1/3/1/4/131482886/6922958.pdf
    • http://files.recovery-counseling.com/uploads/1/3/1/4/131406211/ccad17a7b.pdf
    • http://files.excelism.in/uploads/1/3/1/0/131069950/a80a9.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/wirikexewajuzazajevota.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0406/files/41710875712.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/peluvizumafuxox.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7933/files/weregoxubidasikovixaxikos.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/86706958549.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9377/files/5401686069.pdf
    • https://cdn.shopify.com/s/files/1/0447/4011/6629/files/quadratische_funktionen_aufgaben_mit_lsung.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6384/files/punasisalevefavoge.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/kasidu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/convert_string_to_integer_java.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_off00007009.bin
1b519b361e773b27baba86c300a7d4efc9d4539a7db0a01abff7cb9b8e07812c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7009 5200 bytes
font_01_sfnt_off000081bd.bin
93db0e99226455d36ed778ae2e494621693a01db389bca0a3876412d89c0cb4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x81BD 10520 bytes
font_02_sfnt_off0000a584.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA584 4324 bytes