Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60d2265447ae582…

MALICIOUS

PDF

43.7 KB Created: 2020-08-07 09:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea15c0083e04e94137a2e3436e7f5ff SHA-1: 6a51e81cd8d6532df82fb3eff10792af409b2338 SHA-256: f60d2265447ae5824a3dcc9faf205b9eea5f8bc9d50cc93be01df9370651792a
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Ielts writing task 1 academic samples band 9 pdf' and the malicious URL. This suggests a social engineering lure to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ielts+writing+task+1+academic+samples+band+9+pdf
    • http://files.specsolns.com/uploads/1/3/1/0/131070116/valapuvu-xitofafusibe-gakagilevexopi-xevim.pdf
    • http://files.hamiltonpiano.org/uploads/1/3/0/7/130776167/pexerimodizupo.pdf
    • http://files.skyfensilk.com/uploads/1/3/0/7/130775200/0809e936d0956f.pdf
    • http://files.circular-canary.com/uploads/1/3/0/7/130776578/tovoxop.pdf
    • http://files.bittersweetapothecary.com/uploads/1/3/1/3/131384300/e498771d108ecd5.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/tosejegoguzudabugoki.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7599/files/nazovunonilamojaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/34576946588.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/dezofu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1460/0342/files/jewelry_appraisal_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/68235328916.pdf
    • https://cdn.shopify.com/s/files/1/0430/7314/2933/files/how_to_hack_typing._com.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/linusuxoxudorajofodigem.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/53078709778.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/gijado.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_off00006b3b.bin
585002d457fd5012c799e7a3e429af5cbf801222dbd27194e0d5fe244d8482c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3B 5916 bytes
font_01_sfnt_off00007f5e.bin
d59086e00813bf8f860587ba1ffb488134f32b934f411c3b2a9903ed2dc1f6a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5E 10120 bytes

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