Malicious PDF — malware analysis report

Static analysis result for SHA-256 8380ee6c26191b8d…

MALICIOUS

PDF

46.4 KB Created: 2020-08-23 23:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18a47f490cfa6582c1ae265c36fb16ec SHA-1: 6f62343c18c21e2373f6d99bc309a96f53a0dc51 SHA-256: 8380ee6c26191b8d83a38510c8d4a9e782d753887099b1694fcef1ea5883d7bd
194 Risk Score

Malware Insights

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

The PDF contains embedded links and text that mimic educational content to trick users into clicking on malicious URLs. The primary malicious URL, 'https://ttraff.cc/pify?keyword=marigold+english+book+class+2+answers', is identified as a malicious redirector. The ML classifier strongly indicates maliciousness, and the PDF structure suggests a link farm designed for SEO manipulation to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=marigold+english+book+class+2+answers In PDF document text
    • http://mobaxupi.cadychiropractic.com/uploads/1/3/1/0/131070450/kexunajopeto.pdfIn PDF document text
    • http://files.arkangelcreations.net/uploads/1/3/1/4/131452903/vezemavot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/cuet_admission_result_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/piridunififajulula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/88604486887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/wepexitorosif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8667/4088/files/critical_theory_in_literature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/ninebunuxagavijoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0512/5281/files/android_auto_application_mode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/air_force_question_paper_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/62256829157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/29854333635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4798/5053/files/ayatul_kursi_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/37940091712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/un_sustainable_development_goals_progress_report.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000629e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 5636 bytes
SHA-256: 107a66c7342b16d52e03b3c64ba4a91531e907fa8189837632277b55b7038297
font_01_sfnt_off000075d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D0 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00007e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5D 9724 bytes
SHA-256: f7fcb6053de1d9dc7e70117a9ad13b7c53c5b51f8b903e66be70bc468ec6862c
font_03_sfnt_off00009fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE7 2916 bytes
SHA-256: 55086fd9ee3a40967ccb26436e4e17c00c087b1f5e27f1daed9b17afabfead88