Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c38cc1f3da529d3…

MALICIOUS

PDF

53.3 KB Created: 2020-07-30 09:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0dfddfb02a5d70d0f2588d815f6f46a0 SHA-1: 62ecde0c19d99f15fc44eeeaeb476a79b34ccbab SHA-256: 3c38cc1f3da529d373e26a5c442d370374f191089a068b68637db7cf5e4024d6
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a lure to install a browser extension or update, a common social-engineering tactic. It also links to a redirector URL, ttraff.com, which is known to host malicious content. The PDF also contains a large number of links to Shopify domains, likely part of a link farm to improve SEO for malicious content. No scripts were extracted, but the combination of social engineering and malicious redirectors strongly suggests a phishing or malware delivery attempt.

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.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=edit+pdf+remove+text+online
    • http://files.kcpanhel.com/uploads/1/3/2/8/132815961/1055807.pdf
    • http://files.sevenoakshouse.ca/uploads/1/3/0/7/130775505/bugemovuj_nijokadep.pdf
    • http://files.portlandtouchrugby.com/uploads/1/3/0/7/130775400/xisijabujoxogeb-warik.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/nugeluxowebobusaguxiwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/43462704514.pdf
    • https://cdn.shopify.com/s/files/1/0439/2583/1835/files/72008430518.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/kasujopiwibifidebodulo.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/22616007301.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/dojenudiximub.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/83608754135.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1568204463.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/gajilinokotevap.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/dofurazovo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/pogifase.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_off000094f9.bin
f7bd0966099e3793b94ae89d5716a41736d20017640f77b7bbe88b11fdc0f72c
pdf-font-stream PDF embedded font (sfnt) at offset 0x94F9 4672 bytes
font_01_sfnt_off0000a4c9.bin
38690654b8b5e1e10dba48abb2ddc40ba41ded6d44492ab8736e3885542c8225
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4C9 10328 bytes