Malicious PDF — malware analysis report

Static analysis result for SHA-256 4241a0046b9f37b6…

MALICIOUS

PDF

60.3 KB Created: 2020-09-03 18:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf998bb5e1fe3e195997f0897159bf3c SHA-1: 729b0cffad81a136b2942822fd5551f3e52842df SHA-256: 4241a0046b9f37b683881038854b54a2fa162a7b40b1ae9e1159b142d5753f2c
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, disguised with a keyword related to a government report. The heuristic firings indicate a PDF link farm and an urgency lure, suggesting a phishing attempt. The document body, though heavily obfuscated, contains the malicious URL and references to other benign-looking PDFs, likely part of a link farm to obscure the malicious destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.club/wix?keyword=south+australia+department+of+education+annual+report
    • https://static.usrfiles.com/ugd/b8c837_fb7f2479483b46509ae1b8bf42284415.pdf
    • https://static.usrfiles.com/ugd/9cb927_3cb588e13a124422b51ec4c64602ace9.pdf
    • https://static.usrfiles.com/ugd/c7a620_707bf5fc442b4695b8245562decedca0.pdf
    • https://static.usrfiles.com/ugd/74c34a_6ed670de200146d580d21598730b3a55.pdf
    • https://cdn.shopify.com/s/files/1/0431/1305/4357/files/51799495791.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/fivexodirutaxolafazo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/dufetenafafowevege.pdf
    • https://cdn.shopify.com/s/files/1/0435/0106/0262/files/17170251979.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0496/files/41594066359.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/zogowadumaforowibomavamom.pdf
    • https://cdn.shopify.com/s/files/1/0434/0744/2076/files/the_cask_of_amontillado_holt_mcdougal.pdf
    • https://cdn.shopify.com/s/files/1/0438/5597/0454/files/zemivujofuroxex.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/jopetuxawisa.pdf
    • https://cdn.shopify.com/s/files/1/0462/6645/0074/files/decision_matrix_template_word.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_off0000ac76.bin
8055dc3a555b3e53742de247e74e8326fcd92a156a004cdfe8046cf4d2f60661		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC76 5500 bytes
font_01_sfnt_off0000bf00.bin
3f146ff3dd421d21e45aeae67ae7b5e194a64abe0feee7958c1b546f6d7e7f20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF00 10832 bytes

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