Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa17d2172b4a1ff…

MALICIOUS

PDF

71.8 KB Created: 2021-06-11 05:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1d6ad1d9b9e3e8fa2c5aa23b2f4da505 SHA-1: d56f5699d5f63c09840e197b905ff55b47d97637 SHA-256: daa17d2172b4a1ff55aa45dd3b19270089d16d0d01ba229c001d3a50a9f5bb42
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL that mimics a search result for a textbook, suggesting a phishing or malware distribution lure. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. The primary IOC is the external URL used in the lure.

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://pixomot.ru/pbw?utm_term=ross+and+wilson+anatomy+and+physiology+13th+edition+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4458144/normal_5ff8246d6ea36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403565/normal_6023ff8939493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_600c54c3a1910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_5fe820428873f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497078/normal_60415b5b8d88e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373240/normal_6043725683a60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420756/normal_6044fe8b4058d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_60be960940c94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cec007c-df1c-454d-a295-833a96ef05b9/sebixugewefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36da0588-2ed3-4d1a-8b44-cc77bd5679c0/what_size_is_1_64_diecast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9e0a6fd-1468-4a20-b6c6-edc019436a67/new_haryanvi_songs_haryanavi_download_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f1c0dc8-4d51-4170-b9fa-1ef23060bd91/what_is_goodwill_in_law.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c7117e-3f4a-463e-a2f5-9f79042c8f8c/balapesuvixeto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bcb9f55-4f3c-46ee-9d9e-5b8f33d837e0/what_is_a_computing_innovation_example.pdfIn PDF document text
    • http://palixazoke.pbworks.com/w/file/fetch/144866766/rental_agreement_form_word_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a37acf32-e845-454c-a886-be4cd42c5b57/bodyboss_ultimate_body_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/582853ec-298d-4fc8-bb85-a38fd162d111/trading_strategies_books_free.pdfIn PDF document text
    • http://lekipirunezi.pbworks.com/f/honeywell_6000_wireless_installation_manual.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_off0000d9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BC 5872 bytes
SHA-256: f33b82ef2d68e15b99095b15d59f84d98495b42bdd57a43bdc25984a5f2b6578
font_01_sfnt_off0000edbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 10828 bytes
SHA-256: 5a91e02bdc7a9722cdb1efba640ec73acbc42645499710eba37997f77aa787fa

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