Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f079ab9d6799c5…

MALICIOUS

PDF

46.1 KB Created: 2020-08-31 10:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64b42a5307fd21af071305e302638b77 SHA-1: 34e26117c49aec6e4cfa92aa7b9c3a559fd9ad70 SHA-256: e3f079ab9d6799c5e2cae813db1dea9921247445758e34ada497bbe152e78cc2
168 Risk Score

Malware Insights

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

The PDF file contains a prominent link to 'ttraff.com' with a query parameter suggesting a lure for 'free paypal money'. This aligns with a social engineering tactic to trick users into clicking malicious links. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that this URL points to known malicious redirector infrastructure. Additionally, the 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document also attempts to trick users into installing browser extensions or updates, a common method for malware delivery or credential theft. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=free+paypal+money+no+human+verificat
    • https://static.usrfiles.com/ugd/b8c837_1e0f500d713148e38461148786b0980f.pdf
    • https://static.usrfiles.com/ugd/b8c837_040c7584a9a24ecc9a3cd31e372d9080.pdf
    • https://static.usrfiles.com/ugd/314c35_a41dc45b5e6243a9900eabc32b77c1e0.pdf
    • https://static.usrfiles.com/ugd/45fd81_610399383c18404aaa3fe46992b89726.pdf
    • https://static.usrfiles.com/ugd/08fe48_4820f370b8324b0892fbbefcfccfd050.pdf
    • https://static.usrfiles.com/ugd/d5415a_de35b559b16f4ce1866c72964eebfec9.pdf
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/mevof.pdf
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/xogudokesogigufawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8281/7441/files/plane_analytic_geometry_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0439/8232/3870/files/snow_loreena_mckennitt_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/6658/8325/files/sufagekodedalen.pdf
    • https://static.usrfiles.com/ugd/52b593_bc5955ee81dd43e59fca02f220fff268.pdf
    • https://static.usrfiles.com/ugd/4d400c_dd88d4599448488ea51cd1a8e5f5559b.pdf
    • https://static.usrfiles.com/ugd/4ae4db_0c455177de96484ab2f65a34010c9bb8.pdf
    • https://static.usrfiles.com/ugd/93c935_492c37b0ccde424aa8d6b6c26498ebd4.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_off0000751d.bin
ac2e34f1611d8edea31c241057f9a6fc58dcec9b5c49cd17c9c398dab210df62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751D 5196 bytes
font_01_sfnt_off000086a9.bin
b8ebe5190f106e1824ea6fcd1d031da5b5c2f09773bfd33d7e65a7758fa140dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86A9 10844 bytes

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