Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a7b7e3391ea4c6…

MALICIOUS

PDF

123.0 KB Created: 2020-08-20 02:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ded7567a071c2efcf7722569c6578bc SHA-1: 77f04879949f02be372c51b5a7a86f6d3aace04c SHA-256: b2a7b7e3391ea4c60b6664450cbac16dc4c13b548617ad413f6ff736a82895d9
200 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body and heuristics indicate a social engineering lure, prompting the user to install a browser update or extension. This is often a precursor to credential theft or malware installation, and the presence of a password-protected archive hint suggests a multi-stage attack.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/pify?keyword=chromium+for+mac
    • http://files.theitalianbridge.com/uploads/1/3/1/3/131381677/ed613d59121452.pdf
    • http://files.wallingfordmuseum.org.uk/uploads/1/3/1/0/131070481/7608978.pdf
    • http://xemup.myfantasyfootballworld.com/uploads/1/3/0/9/130969204/juwapuzederun.pdf
    • http://files.aidan.co.za/uploads/1/3/1/3/131383964/kifup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5831/4912/files/dexuno.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/netoneneza.pdf
    • https://cdn.shopify.com/s/files/1/0433/1995/1513/files/jeffrey_archer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0435/2311/3119/files/git_http_proxy.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/74602694437.pdf
    • https://cdn.shopify.com/s/files/1/0449/3488/9627/files/emotional_development_during_adolescence.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/pimevutelapunila.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/vuluxosin.pdf
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/zeravixok.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/92658873091.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_off00018e7e.bin
c95a16dc8de2c5dbb2b58af371fe09dd380e6c538adef0d48e94cb365c0be0b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x18E7E 4816 bytes
font_01_sfnt_off00019eb9.bin
df6a3690e3ede2f3d0427e0e4a215a378dae44c2852f23915b19634cd86e02aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x19EB9 12840 bytes
font_02_sfnt_off0001c983.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15
pdf-font-stream PDF embedded font (sfnt) at offset 0x1C983 16312 bytes