Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bdd7243b190461f…

MALICIOUS

PDF

46.3 KB Created: 2020-08-25 03:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07ec364efff383f8e0e0bb316e256901 SHA-1: d3cc186ec942a90cbb3e67a59e38da951d3c2775 SHA-256: 5bdd7243b190461fb8db94ff7f7e621daa40a85bdec574e0502bc2b456969cc3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to external resources. One of the primary links, 'https://ttraff.com/pify?keyword=excel+sheet+for+food+costing', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=excel+sheet+for+food+costing
    • http://files.rockheightsvacationrental.com/uploads/1/3/2/7/132712209/2998679.pdf
    • http://files.smilingelfsoap.com/uploads/1/3/0/7/130775470/6752491.pdf
    • http://files.japan-trademark-patent.com/uploads/1/3/0/7/130775371/vegixuniwab.pdf
    • http://files.jcprhac.org/uploads/1/3/0/8/130813906/kapopakazosorosa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5906/9599/files/teamviewer_8_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/98324167802.pdf
    • https://cdn.shopify.com/s/files/1/0433/2748/8168/files/food_allergy_list_template_for_daycare.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/probability_distribution_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/seminufediduvozelopodife.pdf
    • https://cdn.shopify.com/s/files/1/0439/0925/1240/files/business_risk_management_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/advance_further_mathematics_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/simple_java_games.pdf
    • https://cdn.shopify.com/s/files/1/0436/7728/6565/files/goxipiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/wufenujowilojiratuwuwise.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/24145078354.pdf
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/bewezopemep.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006395.bin
bdcf1e2bba63954179d23032d73dc3a51f68904c319034b738e3044ff78461d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6395 5096 bytes
font_01_sfnt_off000074e3.bin
a45d73a0f68d7c086c1677b5fd403fb1fb453e944f48a2d9dc97d755d88119a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E3 9944 bytes
font_02_sfnt_off00009719.bin
764fe263e68fd20aff2bbd96e69f5a400d440299d02096befa162391f913c7cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9719 16144 bytes

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