Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb071075606fc1b1…

MALICIOUS

PDF

42.9 KB Created: 2020-08-11 01:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c682dcb7974108c45494ce8fb659639 SHA-1: b6369ac1240b314e4386595a8add8fc11ca53cd0 SHA-256: cb071075606fc1b1f31591fb8946b4d416ac4a8a0e269084ee641704b302f6dd
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains references to 'Turnitin plagiarism spectrum pdf' and a URL that further supports this lure. The primary malicious IOC is the redirector URL, which is designed to lead users to harmful content.

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=turnitin+plagiarism+spectrum+pdf
    • http://files.recbarlouisville.com/uploads/1/3/1/4/131452811/wuwojubegenoko-welajokiwuwofis-xofobedulu.pdf
    • http://files.georgelingpix.net/uploads/1/3/0/8/130814513/2146557.pdf
    • http://files.limerickcommunitygrocery.com/uploads/1/3/0/8/130874296/setagimebetawef.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/2005_dodge_ram_1500_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/keborudufosovakasazilul.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/gopigetegufupoku.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/42448347474.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/63550632559.pdf
    • https://cdn.shopify.com/s/files/1/0433/0999/0043/files/68403645248.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/78809921001.pdf
    • https://cdn.shopify.com/s/files/1/0437/2335/8358/files/35046784568.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/29761496966.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14490041284.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/xevoxadatof.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_off000069e1.bin
d1b2f0b719b4fdc2fc6919e5bdf1088eea9ab57742741b108484511ab5937591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E1 5424 bytes
font_01_sfnt_off00007c35.bin
e48eb47b8d5f7c74fdae6eba98d56efef608bcdada7ed2d79b4013bb6f8e3fce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C35 10304 bytes

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