Malicious PDF — malware analysis report

Static analysis result for SHA-256 d80af402c71a7561…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 16:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b12adb5f50f1ca5ee17342b2491077de SHA-1: c549a5dfccf7d781ea6ff69d47bab0211d8e3d1c SHA-256: d80af402c71a75614a230296d0e5146bf61ae573b1afcb2c2d41a6642cc4e416
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to an 'Australian used car value guide' and the malicious URL, suggesting a lure for users interested in car valuations. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful sites.

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.ru/pify?keyword=australian+used+car+value+guide
    • http://pixagudu.wildthingsbylindab.com/uploads/1/3/1/3/131382092/1441610.pdf
    • http://files.smdevents.co.uk/uploads/1/3/1/4/131482931/9784158.pdf
    • http://fixep.morganpipes.com/uploads/1/3/0/8/130813765/narazoresegu.pdf
    • http://livoxo.casasdearts.com/uploads/1/3/2/7/132741334/lipubekozimuju-namebu.pdf
    • http://tesola.ricklewisrealestate.com/uploads/1/3/2/7/132712354/fageva_tuxeb_jujonozuxab_watekujavi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2001/6021/files/19530158465.pdf
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/buduvaxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/xukamaluguludi.pdf
    • https://cdn.shopify.com/s/files/1/0440/2996/8534/files/96085583911.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/vurofasediv.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/sogiperezezilezanaduk.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/libros_apologetica_cristiana.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/pimubakogivizexodiridoje.pdf
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/gipadesufuwonowidiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/10340059549.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_off00006e1e.bin
fcd34bd192ccfdbf030dc582e497f3206d9c04c331dd8aeda00189708a2c96ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1E 5156 bytes
font_01_sfnt_off00007fb5.bin
939d6566560a9f6be416b2e8a29c5bd71b005cee2768b257fdf6c0994266bc6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB5 10824 bytes

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