Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49e2145089a0194…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 19:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8dafce766e08ab76c1ec08f6d78c768 SHA-1: 59b880629519ed9f45cf52206ac5e95ef8e68455 SHA-256: f49e2145089a01948cfc1e29226c3963d0768206713e4bb66b5b5c8f4bb330ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body text, though heavily obfuscated, appears to contain a lure related to downloading a browser. The heuristic 'SE_BROWSER_INSTALL_LURE' confirms this social engineering tactic. The primary malicious URL is https://ttraff.ru/pify?keyword=free+latest+uc+browser++for+pc, which likely leads to further malicious content or malware download.

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=free+latest+uc+browser++for+pc
    • http://files.piercingcrossfit.com/uploads/1/3/1/6/131606366/pedazilotufutekejul.pdf
    • http://files.bagsbytheshore.com/uploads/1/3/1/4/131406403/5768397.pdf
    • http://files.greatnewsuk.co.uk/uploads/1/3/1/4/131452821/pakibusepad.pdf
    • http://files.ownerbuildercourses.com/uploads/1/3/1/3/131379732/d06de.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/9263534812.pdf
    • https://cdn.shopify.com/s/files/1/0435/2308/0344/files/cool_answering_machine_messages_audio.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4191/files/wafikotafaxexagilup.pdf
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/zekimiwumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/22508662184.pdf
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/43102316221.pdf
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/kejuforifuwiwokeda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/weights_exercises.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_off00005e98.bin
ef970583653ae6e81967bd0c0bacb7076852f6aaeec85bd3d14327c6a6d5f71c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E98 5196 bytes
font_01_sfnt_off00007061.bin
e93698a51e1e1f1ca4c08f48b239ad9bdf842ed148f69ebf229754a6b1296ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7061 9956 bytes

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