Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d96d575fb024f1…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 13:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c370b942fc4f5602a915065fa6dd466 SHA-1: 489d6ff46a9358d1dbe7f61675b364eeb3986f7c SHA-256: 37d96d575fb024f10837189d5e02b5bb9bbd24a129fe4478057f9ec655c53dbc
200 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to a known malicious redirector and a link farm. The document body, though heavily obfuscated, contains text that suggests a lure for a browser extension. The presence of a password-protected archive lure and a browser extension lure indicates a social engineering attack aimed at tricking the user into downloading further malicious content or granting access.

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.com/pify?keyword=email+template+gmail+extension
    • http://files.nickferrucci.com/uploads/1/3/2/7/132712451/runajijibufo.pdf
    • http://files.greateraustinsws.com/uploads/1/3/1/4/131406173/laxobox.pdf
    • http://samesir.thecreativeshowcase.co.uk/uploads/1/3/1/0/131071164/damovufago.pdf
    • http://files.foxnet.xyz/uploads/1/3/0/8/130814680/0dc940e1.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/30528503637.pdf
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/dutuxukokexagamekupupaxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/45129544556.pdf
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/46438079926.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/zipcode_dayton_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/18542024331.pdf
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/66793194612.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/75502966772.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/xogid.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/32792128163.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_off00005ff2.bin
7d8528e522fa864cc7fe06a6f9b2f333a87967f93e8d90291b727dd43e7757f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF2 4856 bytes
font_01_sfnt_off0000705f.bin
e0cc77a09f4cc7f489a2b7ff6c6773fc53a9f3bf01ea473d264e92c88510cf22
pdf-font-stream PDF embedded font (sfnt) at offset 0x705F 10524 bytes
font_02_sfnt_off00009451.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9451 4324 bytes