Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4922ed5df5eb4a7…

MALICIOUS

PDF

40.3 KB Created: 2020-08-31 17:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9054f6fab1172349a47e4405ca375c91 SHA-1: e5afbc7a411fcec4a13b816258ca081420c67f4f SHA-256: e4922ed5df5eb4a78b5112240f1313c048b3139c6984d66611cc5aae687d2cfc
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is designed to lure users with a 'whatsapp animated emoji' keyword. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which is likely intended to lead the user to a phishing or malware download site.

Heuristics 3

  • 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.
  • 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/wix?keyword=whatsapp+animated+emoji
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/compounds_containing_nitrogen_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/49077661383.pdf
    • https://cdn.shopify.com/s/files/1/0450/6664/9750/files/63031758988.pdf
    • https://cdn.shopify.com/s/files/1/0430/6835/8807/files/.pdf
    • https://static.usrfiles.com/ugd/ab922d_1008c7a32f1744428fdb7c7369342858.pdf
    • https://cdn.shopify.com/s/files/1/0463/2697/2571/files/vefumibojilagesurakamuvam.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/22188811202.pdf
    • https://cdn.shopify.com/s/files/1/0433/0700/8168/files/histologia_pancreas_endocrino.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/mpge_4_converter.pdf
    • https://cdn.shopify.com/s/files/1/0436/3019/8937/files/xixetanebubadomewaji.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/92669241046.pdf
    • https://cdn.shopify.com/s/files/1/0436/1987/7026/files/aadhar_with_otp.pdf
    • https://cdn.shopify.com/s/files/1/0437/0789/1877/files/sad_love_breakup_whatsapp_status_video.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_off00005fc6.bin
5fde411116cabb2882e99e25e1def77a9f5b377f3818107e1cbd9bbf45eab83b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC6 5160 bytes
font_01_sfnt_off0000713a.bin
7d7c4fda7e073b04804e683d876c9b0bc162f30ba39addba91e0a21a55a822ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 10472 bytes

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