Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6974616fd96821…

MALICIOUS

PDF

46.2 KB Created: 2020-07-19 13:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f50ea99fabbe0e4423d53b63fe6f1f6 SHA-1: 0843b608a4a4820b27a4b3b235541aedc7f45aa7 SHA-256: cc6974616fd96821607790009bb78db2ef97fda5bf44c910925b15af0d9a366e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=vlc+android+chromecast+subtitles', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains keywords related to VLC and Chromecast, likely used as lures to make the malicious links appear relevant. The file's structure and the presence of numerous external links strongly suggest a malicious redirection attempt.

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=vlc+android+chromecast+subtitles
    • http://files.teaysvalleyvolleyball.com/uploads/1/3/1/4/131453333/3721791.pdf
    • http://files.unionhopebaptist.com/uploads/1/3/0/7/130739011/gazuvodimuxi_duvam_xidop.pdf
    • http://files.trinitychurchpinopolis.org/uploads/1/3/1/0/131070375/7947545.pdf
    • https://dukedelumik.files.wordpress.com/2020/06/60745580882.pdf
    • https://majojilidib.files.wordpress.com/2020/07/33155206514.pdf
    • https://gabixamep.files.wordpress.com/2020/07/60889218289.pdf
    • https://pakelito68704891.files.wordpress.com/2020/06/besotuwesarezaletifadava.pdf
    • https://zodizijemas.files.wordpress.com/2020/07/17012244601.pdf
    • https://zeduvaxuno.files.wordpress.com/2020/07/kagiwasu.pdf
    • https://wupefosa.files.wordpress.com/2020/06/rurowipegexalu.pdf
    • https://tudigaj.files.wordpress.com/2020/06/kopujenozoxomire.pdf
    • https://kedenekom.files.wordpress.com/2020/07/vusuranivid.pdf
    • https://fugebetowipo.files.wordpress.com/2020/06/livenemezuze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/89314323040.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/zivosuwivokelas.pdf
    • https://cdn.shopify.com/s/files/1/0435/3949/7112/files/ludatukevujuzodako.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/zuxem.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/92067452095.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_off00007706.bin
e0e5039320b2f8b90599b2ea491b3b3c22d316d5f2c345ebff58a2c3864e8ebd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7706 5168 bytes
font_01_sfnt_off00008859.bin
19e77798af28489cdb760788fa20c83db7336b3e713eb8966f95be0465cb9158
pdf-font-stream PDF embedded font (sfnt) at offset 0x8859 10156 bytes