Malicious PDF — malware analysis report

Static analysis result for SHA-256 e555426d668d774d…

MALICIOUS

PDF

40.5 KB Created: 2020-08-21 03:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afa6f32bd7f976555986545c575fc047 SHA-1: 3327280ea70438b21ccfe7a19f108ff80f209208 SHA-256: e555426d668d774d4247e472be34529a69cacc657ebb502965d3bed85051ae48
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=flight+booking+templates+free', which is likely the primary lure. The presence of numerous Shopify-hosted PDF links suggests an attempt to blend malicious content with seemingly legitimate resources. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=flight+booking+templates+free
    • http://files.fieldofdreamsnh.org/uploads/1/3/1/4/131406861/kowivijojusu.pdf
    • http://petivimit.childemotionregulationlab.org/uploads/1/3/0/7/130775565/gasepavurilum.pdf
    • http://files.stmarkpreschoolcares.org/uploads/1/3/1/3/131378868/3238805.pdf
    • http://bijuga.wsliteracy.org/uploads/1/3/0/9/130969036/wabufamarogedazes.pdf
    • http://files.wardlawspoultryfarm.com/uploads/1/3/1/3/131397987/tofarekase-dadesuseguba.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/bssc_notification_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/vesoninirago.pdf
    • https://cdn.shopify.com/s/files/1/0430/9024/7829/files/gifuxetiter.pdf
    • https://cdn.shopify.com/s/files/1/0440/9825/7048/files/rifakunisidoxujowulibuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/9063/1064/files/acca_financial_reporting_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/2002/4989/files/fogirunoviwajemufonotoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/8392/2585/files/46137448019.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/53745821752.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/bijoru.pdf
    • https://cdn.shopify.com/s/files/1/0436/9468/6376/files/babalevegolotedopepazo.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_off0000606f.bin
84ed1176e7364f94111e1faf53adc0437a66a922bbaeb42be3c0bbcba869a4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606F 5472 bytes
font_01_sfnt_off000072e2.bin
2c099f08245e2ae42b5cd90f5409d6a3954609b3680d5303b51fafa79165f128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E2 10144 bytes

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