Malicious PDF — malware analysis report

Static analysis result for SHA-256 c297f92fd2c43d38…

MALICIOUS

PDF

55.6 KB Created: 2020-08-31 23:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa0e4e93dd3d901b82f9ffca9bcd6a9 SHA-1: 8a8ac37a3f3c630220daf58638da3e5f65f2969e SHA-256: c297f92fd2c43d3833a33f4238d2a1abdd4b6945e0d8451fda1171948baa017e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=american+gangster+jay+z++free'. This URL is likely used to redirect users to malicious content. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to a malicious site disguised as search results or a link farm.

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.ru/wix?keyword=american+gangster+jay+z++free
    • https://static.usrfiles.com/ugd/10b11f_d11e540b69b7401ea7736bf08caf2255.pdf
    • https://static.usrfiles.com/ugd/493135_32f7e5835a1749f1ac1aab3da8a902d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b9aa2129126495195f1cc0c1c0a91c5.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/54382692.pdf
    • https://cdn.shopify.com/s/files/1/0430/8480/8346/files/92368455671.pdf
    • https://cdn.shopify.com/s/files/1/0465/1008/0158/files/losowapovazezilarodela.pdf
    • https://cdn.shopify.com/s/files/1/0435/0273/1430/files/genki_1_second_edition_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/anlage_kind_2020_kindergeld.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/smartsheet_calendar_app_cost.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35031547028.pdf
    • https://cdn.shopify.com/s/files/1/0432/3409/9362/files/79930000271.pdf
    • https://cdn.shopify.com/s/files/1/0449/9079/1844/files/punuzimop.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/desventajas_de_alimentos_transgenicos.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/17124725002.pdf
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/bewars_movie_ringtones_naa_songs.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_off00008f2d.bin
83db15e2db29369e0be77f08a3c3855774dcf3a30a99002d8ea01ebc9da55494		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F2D 5388 bytes
font_01_sfnt_off0000a181.bin
d7162c469c6cbd3cea15838b275eb272d376ca78981e55b360fa3cf17d7bac02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA181 15556 bytes

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