Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef2e5188ec2ca54…

MALICIOUS

PDF

50.6 KB Created: 2020-08-24 20:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ef00832dfc6769432c60571aa390faf SHA-1: fdb86af821accf7d0999d3b3294474bb103eccbc SHA-256: 7ef2e5188ec2ca54ba3d48910ba12484e6d322f6cb914e4c3aa8a35c5f49fd84
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=bnb+m+nexon+apk', is identified as a malicious redirector. The document body contains garbled text but also includes the same malicious URL, suggesting it is the primary lure. The presence of numerous links, including one pointing to known malicious infrastructure, indicates a likely attempt to redirect users to harmful content or engage in SEO manipulation.

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=bnb+m+nexon+apk
    • http://files.transcendingtheillusion.com/uploads/1/3/0/7/130775825/abdca344a7ddcad.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/50_cent_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/zutekizino.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/benefits_of_work_life_balance.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/tasawemebip.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/letewesuxebud.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/kesojapafupujozevazuwinu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/poxeneg.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/asco_guidelines_for_her2_testing.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/6024950969.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9116/files/structural_composite_materials.pdf
    • https://cdn.shopify.com/s/files/1/0445/4242/7295/files/pesibozumelogaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/final_accounts_format_of_a_company.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ef.bin
8b794a1ee812405a1ecb754d9e66e5ae9159381f17b27caf6cb8710dd9ee8718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EF 4980 bytes
font_01_sfnt_off000078d2.bin
d8eaa46759e8665f46426fa5a9c204540248a5fe10bf8f35283ceb401d7f2526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D2 15184 bytes
font_02_sfnt_off0000a855.bin
2e8f36a8158f76d206cbb338ee9568e11ac34765e06d0776172607053521395e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA855 16268 bytes

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