Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc51e9d00dda59a…

MALICIOUS

PDF

59.1 KB Created: 2020-08-23 05:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 602e124dfebf99ff20b913268e293b1a SHA-1: dad058f1584c5cd63bbaafa6c28e5a5dc14bb5d9 SHA-256: 9dc51e9d00dda59a1331d8bee583573da71dde1ecfbb3b919ba2e5e07070b128
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a 'legionella risk assessment template'. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary malicious intent appears to be directing users to the ttraff.ru redirector, likely as a step in a phishing or malware distribution chain.

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/pify?keyword=legionella+risk+assessment+template+for+offices
    • http://files.emaportfolio.com/uploads/1/3/0/8/130873838/zesosutebojex.pdf
    • http://files.merwininsurance.net/uploads/1/3/1/3/131381900/9017042.pdf
    • http://files.caringwithoutboundaries4u.org/uploads/1/3/1/8/131856498/kanoguwagawojemulofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0992/3493/files/intermediate_financial_management_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9365/files/friendly_letter_template_5th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/video_maker_app_pc.pdf
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/89563165834.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/59003071209.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/limofopiwororuzoka.pdf
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/billionaire_casino_hack_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/86084321017.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_off00009cee.bin
9e01859e9f23c6b08cad8ccb3d28639d261a820b9b9d8bb1ef51bf2b3248919f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEE 5128 bytes
font_01_sfnt_off0000ae4c.bin
d4e72503cc98fe280ec0f85c5f855b10769f12db375bcada3a7bdd004271729b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4C 10076 bytes
font_02_sfnt_off0000d0ba.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BA 4324 bytes

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