Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07ff93faffd23e4…

MALICIOUS

PDF

119.2 KB Created: 2020-08-31 08:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 822a2fb4a762e8c036cf43f8814937a2 SHA-1: 87e696dc6e8d7d53e5f9c1e4561e1c4a0e3d2e6f SHA-256: a07ff93faffd23e45f7cc829785a8753e6dc5064c1adbf1bc4082538fc97a5f9
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=the+avengers+films', which is flagged as malicious. This suggests the primary purpose is to redirect users to potentially harmful content.

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.com/wix?keyword=the+avengers+films
    • https://static.usrfiles.com/ugd/63d3ad_c0eab723a96e4bdda8466cbdd8d30d10.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc303731d6eb4686ac276f30f5750e27.pdf
    • https://static.usrfiles.com/ugd/764aaa_1557d1ea632040b186860d7786ea09dc.pdf
    • https://cdn.shopify.com/s/files/1/0439/8101/3150/files/zufaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/mideramodetolu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/tabulelepafikasokal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5774/0967/files/56561778130.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0213/files/basic_pacific_login.pdf
    • https://cdn.shopify.com/s/files/1/0434/1694/4807/files/college_ranking_us_world_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/24377884413.pdf
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/alex_s_adventures_in_numberland_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/5957/6986/files/kedekesexuxobefusuj.pdf
    • https://cdn.shopify.com/s/files/1/0465/4576/4510/files/lord_of_the_flies_reading_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8491/files/noratozu.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_off00015cce.bin
772903238e0722905f28f2d770426401913f0ce865e6554a7f240d8347ba7e58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CCE 13996 bytes
font_01_sfnt_off00018aca.bin
ea08761e4a83e43aba9d729023c75a850073e16254512b1a6bc24828582bd736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18ACA 5188 bytes
font_02_sfnt_off00019c50.bin
540c3daf8d049c4525870509927cbf1a85026cdb72a4adb07c6f9af3b2b5562b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19C50 16232 bytes

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