Malicious PDF — malware analysis report

Static analysis result for SHA-256 2180b5658579dfe4…

MALICIOUS

PDF

42.6 KB Created: 2020-09-10 14:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99a89f8e0a1970904fa9c5a9920b391d SHA-1: de6d099179dcec190d32cd7d88a0919531245386 SHA-256: 2180b5658579dfe490a99417222019656ee8f10296dd233433b3605bc1bf6715
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 firing indicating a malicious redirector. The primary malicious URL, 'https://ttraff.club/wix?keyword=blank+calendar+template+2018', is presented as a lure for a 'blank calendar template 2018'. While many other links point to benign content, the presence of the malicious redirector and the ML classifier's high confidence score strongly suggest a phishing or redirection attack. No scripts were extracted, limiting the analysis to the document's structure and embedded links.

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.club/wix?keyword=blank+calendar+template+2018
    • http://files.serafinarosen.com/uploads/1/3/2/3/132302814/silejujok.pdf
    • https://static.usrfiles.com/ugd/cf5aa9_250a38f550614bb08477c24fe308845a.pdf
    • https://static.usrfiles.com/ugd/6c98bc_e4d040ce321340e7ad5aa99f51d1141d.pdf
    • https://static.usrfiles.com/ugd/5ad03d_b59aef472d1d455283a2ed513dc63edf.pdf
    • https://static.usrfiles.com/ugd/26938b_9f43f154c2d34352923662a8fb350b08.pdf
    • https://static.usrfiles.com/ugd/b16523_c05cba7ba93e4ec2a589e7dc08254b2c.pdf
    • https://static.usrfiles.com/ugd/b1b16e_73f848982b7e406f9b457afe652a3f81.pdf
    • https://static.usrfiles.com/ugd/d99ef3_9c9fe7ae0e454e0988bbbc19db720af4.pdf
    • https://static.usrfiles.com/ugd/10b11f_b332d4f85d924debaa4df9124b714e06.pdf
    • https://static.usrfiles.com/ugd/3bbd68_d2be4e2ff6fc48d381864074a39d0634.pdf
    • https://static.usrfiles.com/ugd/b8c837_465b0c3ebe4b43219b3f6ec87d22ccf5.pdf
    • https://static.usrfiles.com/ugd/824332_0697a87fc9cd4fa7aa631340fc11b4fe.pdf
    • https://static.usrfiles.com/ugd/5b9365_b89575bf26d241329dac0c04bacb980d.pdf
    • https://static.usrfiles.com/ugd/a891c0_d9185d353cec43b0ab2ffa2ed6f0a438.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_off0000679d.bin
f0bbf3bb4cc748a9bc4d4b6168a3240ec59a197202c9177539052f18951acd25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679D 5676 bytes
font_01_sfnt_off00007ada.bin
8959184d10382e9e2e1c7e399cbfd3cfa03510d7df689220f14b9333c1b7741a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADA 10244 bytes

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