Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebf9ad6a0efc4ce…

MALICIOUS

PDF

74.9 KB Created: 2020-07-29 16:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 508a8cee38c40f6e3e4f209f171d4400 SHA-1: 4015b20281585a83e8448cccf508bd3ecc4b9b17 SHA-256: eebf9ad6a0efc4ce2e0120f5bdc2386ffc264d616e3ffc62e3953be7ca40b56a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to 'ceramic composite materials', likely serving as a lure. The heuristic firings indicate a malicious redirector and a link farm, suggesting the primary goal is to drive traffic to malicious sites.

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.ru/pify?keyword=ceramic+composite+materials+pdf
    • http://files.shawnaughtydesignz.com/uploads/1/3/1/3/131383383/xujikuwivisoro-budagoj.pdf
    • http://files.jmkuztomz.net/uploads/1/3/2/7/132712333/9715006.pdf
    • http://files.jciitaly.org/uploads/1/3/1/4/131438639/kenizujume.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/32973707881.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/7086988475.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/21134987227.pdf
    • https://cdn.shopify.com/s/files/1/0432/8875/6384/files/pufobenilituvib.pdf
    • https://cdn.shopify.com/s/files/1/0435/9559/5938/files/zalidifafikesijibupinaxup.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/raxodinatubolozudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/6501496072.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36726725464.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/famixetesuvesokojejawab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lokilus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3884/files/74740407787.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/83014739499.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/36608698408.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/54771490853.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_off0000e8fd.bin
32b34c250f5e60efa010487b54e1942c261ffc402c4e2a66fe0240100e6cbffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FD 5008 bytes
font_01_sfnt_off0000fa00.bin
78bce9dc3682128c0932a4243c3e05b5942640995ccc3ec73b6e8d615e85a9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA00 10560 bytes

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