Malicious PDF — malware analysis report

Static analysis result for SHA-256 668577edaa5aa88c…

MALICIOUS

PDF

77.3 KB Created: 2021-05-11 19:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5a6d7766c23e9ccd2b24cee2a35de3d1 SHA-1: ad3abd2ffbb59b3d27c88e2174c5881296f5a052 SHA-256: 668577edaa5aa88c1701a943c7a239085384fc967f2ffb6b8b48b825bd1d4b02
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a heuristic indicating it is a lure for free downloads, redirecting to the URL https://maypoin.ru/strik?utm_term=the+book+of+secrets+osho+wikipedia. This URL is flagged as a redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the overall pattern suggests a phishing attempt to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=the+book+of+secrets+osho+wikipedia PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461516/normal_5fed3348b7bcf.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/jadipamiweki.pdfIn PDF document text
    • http://xovebud.mygamesonline.org/68654373098.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/wisinedu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485313/normal_5fc9a9ede2575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488604/normal_6038ccc07c4e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449987/normal_60214d539a3ed.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/6d404308-2c4f-4237-a8f0-92b271e5a0ae/mitsubishi_mr_slim_inverter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720dfc8e-ae6c-4fd9-a830-3223a09888f3/kiperovuremaxomi.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/friendship_dp_images_hd.pdfIn PDF document text
    • http://dazejifudora.onlinewebshop.net/73281145174.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/mixibojabegenifatafiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/babiverizuwuja.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/audio_songs_come_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/safuwuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/how_to_export_keynote_with_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/judux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7be243ff-ca4f-431e-b92a-f16c6257dd78/mulokojumotosuwezinova.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/professional_mixing_and_mastering_tips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a817c1fa-8573-4ec9-a16f-2d383ae93a12/nordictrack_treadmill_c970_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/bekuno.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/36533047224.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_off0000f16b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16B 5456 bytes
SHA-256: 91b08ca844400d04c0d772205e16e75e2dbcdb5401e0363e76cfe635715d2c0d
font_01_sfnt_off00010405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10405 10420 bytes
SHA-256: 6bc1de6b1d4c78e609bddc6c7fd36b02582e199bd1a031501167fbe10af8561f

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