Malicious PDF — malware analysis report

Static analysis result for SHA-256 b828ab6efdee350f…

MALICIOUS

PDF

38.4 KB Created: 2020-08-25 06:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b38723a6cd0a1cb962fd88f8522ab11 SHA-1: 25a7758ea613133453a6f0e9543f33986f593768 SHA-256: b828ab6efdee350ffcab237d907ad66cf40bebb550a98280e589ed5fa28b6171
130 Risk Score

Malware Insights

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

The PDF document contains a lure for 'King James Bible offline for PC' and embeds a link that redirects to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to host further malicious content. The document body contains the primary malicious URL and a list of other URLs, some of which are confirmed benign but others are unknown.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=king+james+bible+offline++for+pc
    • http://files.acuizen.com/uploads/1/3/1/4/131453127/wefoxaweb.pdf
    • http://files.aspccc.com/uploads/1/3/1/1/131164473/vusapibesabu_korimesujegun_xaditojurifof.pdf
    • http://siwajor.projectechelon.org/uploads/1/3/2/8/132814930/wezuxokubazi_dotelup.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/tixamide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7414/files/vande_mataram_movie_songs_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0459/8779/1015/files/60570854683.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/jikekajimatikovofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4196/3679/files/suzepipatusu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/11335389469.pdf
    • https://cdn.shopify.com/s/files/1/0463/2438/3904/files/gafofag.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/guitar_arpeggios_shapes.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_off00005754.bin
b8a8e509c798b71d6a5b384b1fbfdc929cbe547a1e9a9f1a00369c847870aa50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5754 5520 bytes
font_01_sfnt_off00006a05.bin
8707339f70a814155b749cf5e4e36de045b3d81f302e252c57499a5860ce6797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A05 10268 bytes

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