Malicious PDF — malware analysis report

Static analysis result for SHA-256 410216e79d596212…

MALICIOUS

PDF

44.0 KB Created: 2020-09-09 07:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 289c83e653f6b3da2e87fae882841065 SHA-1: c6128d9cdfaa66e29114b8352268228ff9fccb1c SHA-256: 410216e79d5962129bef5f626bd1465eb9a7f91e502d3d4be410d958e0707b00
130 Risk Score

Malware Insights

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

The PDF contains a lure for a 'Merriam Webster Unabridged Dictionary free' and presents a visual download button. The embedded link, however, redirects to a malicious URL (ttraff.me) which is likely part of a phishing or malware distribution scheme. The PDF also hosts a large number of other PDF links, suggesting a link farm for SEO manipulation or further distribution.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=merriam+webster+unabridged+dictionary+free
    • https://static.usrfiles.com/ugd/b58d21_399e218ce8644aa188f368bfc9d1802f.pdf
    • https://static.usrfiles.com/ugd/625844_f3ed626c5e7642f38920d5ac03ba10a3.pdf
    • https://static.usrfiles.com/ugd/30ea26_131a108d61dd4198997fe5989089c3b6.pdf
    • https://static.usrfiles.com/ugd/0047a4_3c2094ada1ea45f9947ce7857e881a12.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_b66f95c5883f400b8b4221bce93c9406.pdf
    • https://static.usrfiles.com/ugd/c0518c_e514d65f57ba4547b3d83eaf63ef9aa4.pdf
    • https://static.usrfiles.com/ugd/b8c837_61bad3644f934a5d853a47703719c7e6.pdf
    • https://static.usrfiles.com/ugd/6f7357_9f41815ca0b24dc7a3a0b3bac80cb84f.pdf
    • https://static.usrfiles.com/ugd/dcfb95_7e8f6948cbae44a98799912396275552.pdf
    • https://cdn.shopify.com/s/files/1/0429/8365/3527/files/astm_a53_gr_b.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/goveguj.pdf
    • https://cdn.shopify.com/s/files/1/0463/1455/3506/files/assamese_movie_free_site.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005430.bin
177f103b02f8e4707138888fe974c63436eff0854894a1242c120f10b5eb188b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5430 5648 bytes
font_01_sfnt_off00006780.bin
a1fd0441b0a921cf2033da76ef3c3a226dd5c2bb714479a8e7d4cb4a8817cd21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6780 10792 bytes
font_02_sfnt_off00008ca9.bin
1b44218257806f750c7fedc2cca84b6b30ff477c2da870f9e14c0541087d9c9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA9 16544 bytes

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