Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3c27ea10b155ef…

MALICIOUS

PDF

33.4 KB Created: 2020-09-13 01:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 013e599a3106379f8d4093c96afe9642 SHA-1: 166c85fada1d900bdb2181caf372c3feb5bdcc85 SHA-256: ee3c27ea10b155ef0fab4ccd78ba9516d3736a2101f773ae7b8f6b3effcfe934
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a game and a URL that appears to be part of an SEO poisoning or link farm strategy. The presence of many external links, including one to a malicious redirector, strongly suggests an attempt 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.com/wb?keyword=earn%202%20die%203%20unblocked%20hacked
    • http://zipejisuk.richmondbulldogs.org/uploads/1/3/1/4/131438110/d5edfa380.pdf
    • http://jezidovu.torqueblog.com/uploads/1/3/0/9/130969422/1803337.pdf
    • http://dutimor.highwaysnhoofbeats.com/uploads/1/3/0/7/130738918/mijolisujex-tuvire-ragepa.pdf
    • http://files.georgecontini.com/uploads/1/3/2/7/132740327/7a61b0d2b1b71.pdf
    • http://rosobeba.gregglakeassociation.com/uploads/1/3/0/7/130776394/69f022b7e380b.pdf
    • https://cdn.shopify.com/s/files/1/0465/3989/9039/files/rajasthan_police_bharti_2019_online_form_date.pdf
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/simobe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/30150899210.pdf
    • https://static.usrfiles.com/ugd/b5973a_f6fd02249a884a3ca74bdb6bff4272e6.pdf
    • https://static.usrfiles.com/ugd/41a0b6_b583240b3ab34947a21fac46119be82c.pdf
    • https://static.usrfiles.com/ugd/d954c5_9fabe3432d8746e49b9e50217880457f.pdf
    • https://static.usrfiles.com/ugd/2994dd_225089753c634e61bf9f0f03dbfc89ec.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_2b99a855e1b54365a6c313181acd2be8.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_cce69cb7a08c40a79158e8155c046b92.pdf
    • https://static.usrfiles.com/ugd/8d5d69_9840ae3e11664691b9ae9066aba27f84.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_off000047aa.bin
374fa7c3f36be74873e36bf9cdccf0c8b81a9d7d8c2de5a8429208f8792c569c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47AA 5308 bytes
font_01_sfnt_off000059b4.bin
99e9ed4decb1bb003c64d376b7b69162e6e09bc3da81b3b02f22e850c960839b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B4 9140 bytes

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