Malicious PDF — malware analysis report

Static analysis result for SHA-256 d336b2cf78145387…

MALICIOUS

PDF

37.6 KB Created: 2020-08-14 09:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57406f6eaf78c1da3b1b5e706e2f80e1 SHA-1: d82db0adcc759485ad56427b4999c5358807ffd8 SHA-256: d336b2cf781453873824f55a68dcbb66327e07825c245488f8d24c71a33d8093
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'Florida collections textbook answers grade 8' and the malicious redirector URL, indicating a lure to a potentially harmful site. The presence of numerous embedded links, many pointing to Shopify, suggests an attempt to obscure the final 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.cc/pify?keyword=florida+collections+textbook+answers+grade+8
    • http://wavekunu.moniquerobben.com/uploads/1/3/0/9/130969060/841834.pdf
    • http://pelabopa.thesuccessfulprincipal.org/uploads/1/3/1/8/131856158/3d7232b.pdf
    • http://files.artofpen.com/uploads/1/3/0/7/130775199/gapezevujepukiza.pdf
    • http://files.rrtackstore.com/uploads/1/3/1/4/131438888/bopimu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9292/6883/files/87640218689.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/8805365569.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/fovela.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemisavixazesunomezixe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21154843933.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/dagekul.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/th8320r1003_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/69473532723.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/sowukunidomi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/cgst_bare_act.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/26400679143.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/30669198585.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/xejedejumedadumaminur.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_off00005628.bin
97db9c18d997a224430b443925c5bdbb5d1e4a05adcd369297ece752dca60d70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5628 5620 bytes
font_01_sfnt_off00006964.bin
70621e86e9205584132618d3283eff5f6ed99409e504741ef1a0c0620a36bd3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6964 9380 bytes

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