Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4d19545b4e15b3…

MALICIOUS

PDF

52.0 KB Created: 2020-08-09 05:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de7c066d70a203a1133669c5c2a0ff3c SHA-1: 5634e0c68ba9f02b890974c0a6d9aabdd55294c4 SHA-256: 1d4d19545b4e15b3956486019656b6077d7e8c507542cfe29e9d6770d3744807
160 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'CCNA sample test questions' and embeds numerous links. One of the primary links, 'https://ttraff.ru/pify?keyword=ccna+sample+test+questions+pdf', is flagged as a known malicious redirector. The document body also contains obfuscated text and embedded URLs, suggesting a social engineering attempt to trick the user into clicking malicious links, potentially leading to further compromise.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=ccna+sample+test+questions+pdf
    • http://files.ladydragonslax.com/uploads/1/3/2/6/132681884/modebagan-kafikena-bupukosivozu.pdf
    • http://files.heatherburnett.net/uploads/1/3/1/6/131637357/sobon-midizabamuf.pdf
    • http://povuju.alexanderbridgeforth.com/uploads/1/3/1/3/131381204/zekuvonupanafu_javikowubeveg.pdf
    • http://files.leftrightrepeat.net/uploads/1/3/0/7/130775174/668255.pdf
    • http://files.naildesignhouse.com/uploads/1/3/1/3/131379085/vuzevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/lijodigipifugemugaxulo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10217245918.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/31415487477.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/55321097120.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/illustrator_export_as.pdf
    • https://cdn.shopify.com/s/files/1/0429/5350/6969/files/the_unit_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0447/8962/9079/files/algebra_2_midterm_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/5573/3153/files/99429453438.pdf
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/lupotavulelokezuduzef.pdf
    • https://cdn.shopify.com/s/files/1/0434/4974/5558/files/xinelodusojezewolax.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/54733738918.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/50469012406.pdf
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/sudipinodedojafubevikef.pdf
    • https://cdn.shopify.com/s/files/1/0433/7657/4620/files/anopheles_albimanus.pdf
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/mifabutopasiwiz.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_off000087d9.bin
9f11b3f335391680fb79320c363aaa0c5891aa3bd8263daac446208fad56c828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D9 5236 bytes
font_01_sfnt_off00009996.bin
2acc2645d4f57d9891f8bae109666df9ece33c7261dee1f1cf82f49f982a0545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9996 12052 bytes

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