Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af8ce450e3afab7…

MALICIOUS

PDF

33.7 KB Created: 2020-09-18 07:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0208bda0b8a9d36d496adc6b7a40c459 SHA-1: 538eb2b4579ab206714847f51eeb2dafcafddc5c SHA-256: 9af8ce450e3afab7fc1d9a8ce36ca210928e5d68a1cc005ac498aa555fb402d5
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text suggesting a lure related to 'Bartender the right mix 3 unblocked', likely to entice users to click the malicious link. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are to benign Shopify domains, but at least one points to a malicious redirector.

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=bartender+the+right+mix+3+unblocked
    • http://digulume.nakitahogans.com/uploads/1/3/0/7/130776031/6265880.pdf
    • http://jilukizi.houstonantioch.org/uploads/1/3/1/6/131637148/diviga.pdf
    • http://files.classwithlyon.com/uploads/1/3/1/4/131437889/sikikusivupofeg_pugodazavoge_tizevolog.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/88720289167.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/34390954188.pdf
    • https://cdn.shopify.com/s/files/1/0437/4449/3720/files/nursery_abc_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/vedilirizifumizoko.pdf
    • https://29bc1a80-e9db-4a46-9d78-f2d935cfe47b.filesusr.com/ugd/7198c1_38006e0cfc584516a8ef59a85ce70709.pdf?index=true
    • https://3ffda440-bb58-4538-b7ac-20f5e60364e2.filesusr.com/ugd/7a13df_f8ec838af5aa4c1d98ef97723529dc19.pdf?index=true
    • https://5058a7ad-1579-4765-9222-551db6316216.filesusr.com/ugd/99965f_9fc3c8ea897544b9933a19b72e8adfa3.pdf?index=true
    • https://e7a0e5d3-02f4-4c0a-a65a-b30a1bf8619b.filesusr.com/ugd/501a20_d7805c1f935040fabe28b0058185bd12.pdf?index=true
    • 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_off00004467.bin
fcb37137c68a690dcd2db0969a20f135c8db8762ef703a9a60c491a67e926ea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4467 5660 bytes
font_01_sfnt_off00005784.bin
f5e517fda1e1dd120a9f1354d7caf19952e4e7fa490125610cc98c23d67b189e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5784 10172 bytes

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