Malicious PDF — malware analysis report

Static analysis result for SHA-256 30942292996b4f5b…

MALICIOUS

PDF

44.2 KB Created: 2020-08-31 19:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0430d23bd3e930305b767746e7b4e4f2 SHA-1: eefca34a35a50759b14d231b499f494f7972b40c SHA-256: 30942292996b4f5b524a7bf2c56992bcad1abaa15049069defd5a87d9550692e
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'antivirus free full version eset nod32', suggesting a lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute the malicious payload. No scripts were extracted from this sample.

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/wix?keyword=antivirus+free++full+version+eset+nod32
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/28355303402.pdf
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/bank_secrecy_act_training.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/10461094038.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/90897254815.pdf
    • https://cdn.shopify.com/s/files/1/0437/2129/3974/files/nadumiluzovi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/taruxuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/foxomuperul.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1085/files/49733153734.pdf
    • https://static.usrfiles.com/ugd/3649d2_9057ecd086634131855e92ac2c227bba.pdf
    • https://static.usrfiles.com/ugd/b8c837_694db9700031449888a3771616668c3d.pdf
    • https://static.usrfiles.com/ugd/e3c460_2f4d08ade8ae438882c9b3dd37a9b7b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_78cd4f74243e408f9c66f44989c6029f.pdf
    • https://static.usrfiles.com/ugd/4d400c_b3b99bbf24e34289a14869f1dca41b3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef9bff7715084d1098bf4381f9438443.pdf
    • https://static.usrfiles.com/ugd/105a8c_d09bcdb6c5a04f33bdd0475d5edea64b.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_off00006ddf.bin
6c06339d817c9ba4c724940709329e503b69455160d6f166f81c98afd2987ef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDF 5036 bytes
font_01_sfnt_off00007f1e.bin
7aa7796e7608088f28158161b214599a701b7503faa2a47698c482efc4d596d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1E 10624 bytes

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