Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa21cad95fa07fc2…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 18:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d0a075a82f778cd346a3c6f400be07d SHA-1: a357757516a5b94b1b7c6721f8ec0510b16c0571 SHA-256: fa21cad95fa07fc2a31e447343dae6f0bfae0c3b4958c6b9f649fba5d6f26798
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=vcloud+director+9.+5.+0.+3. The document body, though heavily obfuscated, contains references to "Vcloud director 9. 5. 0. 3", suggesting a lure to trick users into clicking the malicious link. The presence of numerous shopify.com links, while some are confirmed benign, suggests a link farm intended to obscure the primary malicious destination.

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=vcloud+director+9.+5.+0.+3
    • http://dafas.urbanreach.com.au/uploads/1/3/1/6/131606490/bogivuda.pdf
    • http://files.gioiellisara.com/uploads/1/3/1/3/131380666/rixamebugupinefol.pdf
    • http://files.novagbc.com/uploads/1/3/1/3/131380109/7645755.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67768868558.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/fajudesumoligaxogiduraji.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/36185023941.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/kujonanowumuvinidemojif.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/34715359035.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/vutekenofudoburaxalaluzog.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/809770226.pdf
    • https://cdn.shopify.com/s/files/1/0435/2176/9627/files/science_olympiad_hovercraft_rules.pdf
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/63399143357.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/20833892051.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_off00005afe.bin
a4d4c98db0e27a29270451c4625790217fab6267b692c16a29cbbfc0cd2c4067
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFE 4904 bytes
font_01_sfnt_off00006bc2.bin
15af06ee3425b5e9e15140911622b2775b7a68401050fd77e6cd656106310a84
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 10000 bytes
font_02_sfnt_off00008e14.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E14 4324 bytes