Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5abcc314448a2f…

MALICIOUS

PDF

80.1 KB Created: 2020-10-22 03:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c60357694bb6c9ab81ef48c44e978775 SHA-1: 6076354fd1abe646717291bc1c203d710fe46fe3 SHA-256: dc5abcc314448a2f0dde01a600a862b32766be4a69d306ba80401ee1bab8be8f
152 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9198

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://gettraff.ru/strik?keyword=sim%25C3%25B3n+vargas+morales In PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/bexuludokemasi-gejite-jitedawozo.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/56bb24b4d72.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/mofep.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/568667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5f8f54294eb99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f8cc2ca44a3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f8f94b655e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f8ef969c0c51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_5f8d9447e0e7b.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/3616183.pdfIn PDF document text
    • https://karezolakep.weebly.com/uploads/1/3/1/3/131398125/d8c9453aec8a8f.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/35157.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/3737/6679/files/tailoring_leveling_guide_cataclysm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8202/1548/files/72316633061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5711/8883/files/yosemite_sam_quotes_rootinest_tootinest.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/air_lift_pump_design.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/mejodolelevotuval.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/xeloduxubazotesijapu.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/xebevana.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/vuvexovosawemijen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4763/6122/files/momoduboxekagudenemiduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/suwif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8676/4446/files/national_chinese_honor_society_cord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9209/2085/files/switch_hack_guide_9.0.1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/patrick_keeler_instagram.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1C 5304 bytes
SHA-256: d8038a8fb8e9c9f734cebe61d18654620dceede5d015ef6e0ebc3eef7def9f0c
font_01_sfnt_off0000edc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC7 2212 bytes
SHA-256: b5058c65d1332f6e351047ebae637bf8f3e2a1ef141046456eadf2525bcf2a3a
font_02_sfnt_off0000f7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C9 11964 bytes
SHA-256: f9f1e7f81e1eca86154dbac88bb8843821c53aa3cf5c6651fb942ee24e5abc2d
font_03_sfnt_off00011e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E96 16540 bytes
SHA-256: fb28d254b26dfdd5b0117581bd5cb514c41d61ff94772b5c1b628fd89f848ce0

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