Malicious PDF — malware analysis report

Static analysis result for SHA-256 250158a947e032ba…

MALICIOUS

PDF

66.4 KB Created: 2021-04-06 18:39:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27800857b1602f2ff5dc9a29facfd42b SHA-1: 9f4725d22d1340845f0751e2f6d6746a4e90ba9d SHA-256: 250158a947e032bada429dd0f1a8e9a52c77ef4fcdb491f0d7a448b7ea6b1ff4
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it's a lure for SEO-based phishing, redirecting users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URL, https://lozipotod.ru/wix?keyword=catcher+in+the+rye+unit+test, is the primary indicator of compromise, likely serving as a gateway to a phishing or malware distribution page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/wix?keyword=catcher+in+the+rye+unit+test PDF link annotation
    • https://cdn.sqhk.co/jotenitix/K6jjKC7/big_win_baseball_hack.pdfIn PDF document text
    • http://xiwesesakuvel.medianewsonline.com/partnership_accounts_lecture_notes.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/aiaBSie/44095041874.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/7jbkMja/81661070759.pdfIn PDF document text
    • http://tozofuji.scienceontheweb.net/autocad_2020_mac_product_key.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/31803612993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f7d8cf2-d34e-45f7-8767-9201dac8fb99/norcold_refrigerator_codes_lo_dc.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/how_to_write_letter_of_recommendation_for_graduate_student.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63e4a776-5617-4fab-acf7-81a0cfe351f4/the_neverending_story_book_reading_level.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/76332297726.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/ayreon_the_theory_of_everything.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0085c08-4258-4dea-ab21-9d90fd819475/sizowaj.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/types_of_dramatic_plot.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/bengali_font_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/94975353402.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/chucky_movies_collection.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_off0000c9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B8 4860 bytes
SHA-256: 6b43d14649eee64d573787cb8a592544f4cce22f96a8110a28e5504211137626
font_01_sfnt_off0000da3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3E 10112 bytes
SHA-256: 6575ab48b4e1e386e5ae55b6be6da7af8fc34c803e93d23083b7c7f1e403e1f5

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