Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad627291c9d18310…

MALICIOUS

PDF

40.3 KB Created: 2020-08-10 15:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63a141d123a508b67bb583d5d12229e7 SHA-1: 78492fb43d48a3d3d348741bccba8abb0b14c1ee SHA-256: ad627291c9d1831004f2f4eded28cd37795d51850ef2250d4816e9fc9114f966
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, many of which point to external websites. One critical heuristic firing indicates that a link redirects to known malicious infrastructure. The document body, though partially corrupted, contains the URL https://ttraff.cc/pify?keyword=five+kingdom+classification+system+pdf, which is likely intended to lead the user to a malicious site. The presence of a link farm suggests an attempt to drive traffic to potentially harmful content.

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.cc/pify?keyword=five+kingdom+classification+system+pdf
    • http://wegugam.apdcwa.org/uploads/1/3/0/7/130776760/4103f5a536.pdf
    • http://files.adenrossinni.com/uploads/1/3/2/7/132711966/4513352.pdf
    • http://files.feel-flamenco.com/uploads/1/3/1/0/131069899/wemezorexib-xipaj-mosapodipafuvud-lugekajolivufi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/xewibaxoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/ccna_routing_and_switching_200_125_book.pdf
    • https://cdn.shopify.com/s/files/1/0444/0332/7142/files/arindam_chaudhuri_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/network_controller_drivers_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rijakilijupefiwopoxafeza.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/crown_copy_and_paste.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/the_art_of_business_process_modeling.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/linux_edit_iso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/faderogarika.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/gaxotuzur.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_off00005f79.bin
f4fc5e6dda1ef98001e633827dfc3d40b9a691075e00245115ccaa2e867332cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F79 5560 bytes
font_01_sfnt_off00007264.bin
6535db4c1b144e694b2b67ec15dc22283e5e4f0047b24eebd934904cc820e29a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7264 10000 bytes

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