Malicious PDF — malware analysis report

Static analysis result for SHA-256 445d617362ef6cb7…

MALICIOUS

PDF

33.5 KB Created: 2020-10-27 22:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 4a471ff4ad9b8d855a6287ff04f48cb2 SHA-1: 81e590feed4862c3f5086f79c3640e44ab5aeb4f SHA-256: 445d617362ef6cb7699b48f126b14dd64f2ba575cf8d3865030fb5c401717a40
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting an attempt to disguise the malicious links as educational materials, specifically 'Introduction to poetry billy collins questions'. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further 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.link/123?keyword=introduction+to+poetry+billy+collins+questions In PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/b57b4.pdfIn PDF document text
    • https://gadevonetikob.weebly.com/uploads/1/3/4/3/134358307/9927432.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/2758196.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/zizutiji-fiwilav.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/1/0504/1461/6752/files/english_pronunciation_exercises_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1131/6131/files/91736073001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2643/8550/files/7853484725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3220/7782/files/kives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5102/2001/files/hardening_guidelines_for_network_devices.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/entrepreneurship_development_small_business_enterprises_charantimath_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/medical_waste_management_project.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/51046216830.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/47587547290.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/japiba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeeeb94b-436d-4dd1-856b-fb56e6db80ab/piziwulazepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef5557b-128d-4ac7-8574-11ed05652c8e/linus_and_lucy_piano_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4865/4752/files/jevawetajeluvuwekawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/7481/1591/files/academic_planning_unit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47CF 5160 bytes
SHA-256: 8eeed2757be95242b07437362aca1783159fb34319859a9cdc0e8d9e4ae06469
font_01_sfnt_off00005961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5961 9116 bytes
SHA-256: 11992ad24df34d26c69422ab0dc5d966a15043171ae6197cdd8e8a64be98157b

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