Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1f0917e0510400…

MALICIOUS

PDF

43.5 KB Created: 2020-09-04 03:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3a430c0ee994d7f10ab9361aed0c3d5 SHA-1: 9daf42f97ae1107bae08a4ff19acbad84fc7d72f SHA-256: ff1f0917e0510400d8375fb8bf222e73fc3814d53409d9e710780313d72a953b
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document also contains a heuristic for a browser extension installation lure, indicating a social engineering attempt. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or malware.

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.me/pify?keyword=best+emulator+for+android+games+on+pc
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/zadokomiga.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/math_bingo_printable.pdf
    • https://cdn.shopify.com/s/files/1/0460/0525/6353/files/murifavure.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/63053831652.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/vuliwabegizufotetos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/kotela.pdf
    • https://static.usrfiles.com/ugd/0a593f_d1acb583e218493e871ac398474dc0b3.pdf
    • https://static.usrfiles.com/ugd/c8d394_3479c93c082142fdbfc1ec34fbef409f.pdf
    • https://static.usrfiles.com/ugd/865d50_bbbb5603bddb4ca5ace31d1537854c4c.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/28606240542.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/bibiguraw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2434/3462/files/vomajunafif.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/blouse_cutting_method_in_telugu.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_off00006b7d.bin
35ceda2c9f41321cfdaa8124afd4cba67bc3348e6dac76e1543257cca3056a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7D 5524 bytes
font_01_sfnt_off00007e34.bin
ae764aa10227738f5a087c992e2dee05312fb1aae7e6efe4b1e1809ed2b0e70f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E34 10196 bytes

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