Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d304f0330c4a4a4…

MALICIOUS

PDF

41.5 KB Created: 2020-08-23 04:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4670b58250af83414960a118dd7cd437 SHA-1: fd544b44930cd24e9e3e08ec0f889d6642669ff6 SHA-256: 3d304f0330c4a4a46c6f74784f68bc5c4bb6238d1ad8aa42d76c1244f1b2f5b8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=bahria+college+karsaz+admission+form+2018`. The document body also contains this URL, suggesting it is the primary lure. The PDF also contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, indicating a potential SEO poisoning or link farm tactic to distribute malicious content. The presence of a malicious redirector and a link farm suggests the document is designed to lead users to malicious sites.

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.com/pify?keyword=bahria+college+karsaz+admission+form+2018
    • http://files.leggolf.com/uploads/1/3/1/8/131857679/pewivij.pdf
    • http://juramodin.shrevewoodpta.org/uploads/1/3/0/7/130739723/1488054.pdf
    • http://files.throughthefirellc.com/uploads/1/3/2/6/132681749/towakorud.pdf
    • http://dijoxo.heads-high.com/uploads/1/3/1/1/131164574/4688097.pdf
    • http://files.amrikbetty-coaching.co.uk/uploads/1/3/1/4/131452922/474ccc.pdf
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/centrifuge_machine_principle.pdf
    • https://cdn.shopify.com/s/files/1/0436/7728/6553/files/platform_7_review.pdf
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/81008124525.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/nanepofotoxusem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1034/files/juvorabopatabo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7152/files/usps_form_1583.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/nibivogaropopow.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/sozutikudisimalitore.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3857/files/maplestory_2019_reboot_training_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/din_en_iso_9001.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6527/files/xikarafazoropisoxufopuwum.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_off0000617d.bin
c293be7bf8d7c92852abcffcbee27b690b849b7102ab2a62b48b1ac1212d892a
pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 6120 bytes
font_01_sfnt_off00007635.bin
697a9b864d3c7c66122ba024c5e995f9570e45d9b4d82bbd6bca3439f7282c77
pdf-font-stream PDF embedded font (sfnt) at offset 0x7635 10196 bytes