Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc34e19e4376266…

MALICIOUS

PDF

77.6 KB Created: 2020-08-23 17:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24eaddd0d35afc79ff8d8402d2f9bec1 SHA-1: 41d754ea8661757fa182102cf40e855bd839a7a8 SHA-256: ddc34e19e437626669e9c792aa4b40a563da04113ad5a839aa911bec3e20a12d
130 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the primary links points to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the attack. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent.

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.
  • 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.ru/pify?keyword=short+definition+campaign+finance+reform
    • http://files.thefashionablecrafter.com/uploads/1/3/2/6/132695571/1240797.pdf
    • http://digexof.birminghammodelyachtclub.com/uploads/1/3/0/8/130873825/nasuwisata.pdf
    • http://files.new-style-trailer.com/uploads/1/3/0/7/130739404/rorajesipovasi.pdf
    • http://fodeti.nigelgorskiconsulting.co.uk/uploads/1/3/0/7/130775565/7805eb6002.pdf
    • http://files.beyondthekitchen.net/uploads/1/3/2/7/132741162/lulelupisiloni.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/29369326769.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/python_svg_to_png.pdf
    • https://cdn.shopify.com/s/files/1/0429/3568/1180/files/vedoreju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/4166405017.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/64516812613.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/mezomesaguxomugorinuma.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/chhota_bheem_chhota_bheem_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/nuromitipumemazemozazav.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/90241054235.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/97687457585.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/new_bodo_dj_remix_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/8380/0474/files/dj_naives_ft_professor_free_mp_download.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_off0000ef08.bin
ed044a6e4a2c0d8267ebbef64a8aeff6b8f230295408051e1984da1bb7188570
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF08 5460 bytes
font_01_sfnt_off0001016e.bin
5905722e1180fef5b3ec59254c9809541b03d557a780f9d6f541ec928721a69f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1016E 11148 bytes