Malicious PDF — malware analysis report

Static analysis result for SHA-256 da2e81a1f9349c1f…

MALICIOUS

PDF

40.5 KB Created: 2020-08-16 21:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e56a26681c535fadab4d5fd53daeb440 SHA-1: 2b52ffe0abf35b9ebe8879266fe85d8f346f0662 SHA-256: da2e81a1f9349c1ff5b8a67b52c06ba9daa66044abfb0dd6054d9dc8734efabf
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a social engineering attempt to trick users into clicking malicious URLs. The document body and heuristics suggest a lure to install a browser extension or update to view content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=blazemeter+plugin+for+jmeter, which is likely used to redirect the user to further malicious content.

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=blazemeter+plugin+for+jmeter
    • http://mutunepur.dearconjunction-paris-theatre.com/uploads/1/3/0/7/130739561/furesupenuwibiwi.pdf
    • http://files.tobaccofreewisconsin.org/uploads/1/3/1/6/131637881/mokokiredax.pdf
    • http://files.bunnaagri.com/uploads/1/3/0/7/130775137/tapuge-zetoludesigot-setomo-lubikox.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/ribijojikilubesetam.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/32322110504.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/iti_electrician_tools_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/saxanekatizivadibos.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2196/files/3116352987.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/esl_advanced_vocabulary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/91447844988.pdf
    • https://cdn.shopify.com/s/files/1/0452/8501/5714/files/crony_capitalism_in_america.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3426/files/79796676520.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/alphabetize_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/23905168243.pdf
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/ruxijupo.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_off00006040.bin
f5af65f9acb41be4195e7bb867c57e7eb157e77c03b361872b8c2521d6edc609
pdf-font-stream PDF embedded font (sfnt) at offset 0x6040 5216 bytes
font_01_sfnt_off000071ff.bin
1d7010417068c7d826ea6dce36c3d3401ea969998dab3d5558a85592afd3d810
pdf-font-stream PDF embedded font (sfnt) at offset 0x71FF 10360 bytes