Malicious PDF — malware analysis report

Static analysis result for SHA-256 47258918432ba09d…

MALICIOUS

PDF

64.0 KB Created: 2021-01-25 00:23:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6c55cb4d8ab8cc64eecfcdf88768e404 SHA-1: d82d1b073963014dc6f75b4e930a838bd9e61d1b SHA-256: 47258918432ba09dc0746506e1b5c757ea44b636f0f774ef519dd1bc871b0ab8
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple heuristics indicating it is designed to lure users with the promise of free software downloads, specifically mentioning 'flexispy free download crack'. It utilizes a redirector URL that ultimately points to a PDF file, likely intended to host or facilitate the download of malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/123?utm_term=flexispy+free+download+crack PDF link annotation
    • https://cdn.sqhk.co/sifajoxojif/jHSjege/third_hand_archery_bow_holder.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_5fdb63007de20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425005/normal_5ff6356e290f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383922/normal_6008909dea786.pdfIn PDF document text
    • https://zuzedunili.weebly.com/uploads/1/3/4/4/134460484/murufufuz_pugewa_daruvalu.pdfIn PDF document text
    • https://wariraxaluxar.weebly.com/uploads/1/3/3/9/133986847/9249992.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479710/normal_6008986292a37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406166/normal_5fc92f23b8fd1.pdfIn PDF document text
    • https://japiravonasuv.weebly.com/uploads/1/3/4/6/134644749/wowibuxikuwoji_satedon_gubebulug_jokujamom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496812/normal_5fc8258bbf5d3.pdfIn PDF document text
    • https://tizevilujiv.weebly.com/uploads/1/3/1/4/131406709/7324913.pdfIn PDF document text
    • https://vuwuzujos.weebly.com/uploads/1/3/2/7/132712237/zedow_zorasasiganal.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/wovitiku/kadex.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/my_talking_tom_mod_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/99th_amendment_of_indian_constitution.pdfIn 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_off0000e58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58B 2992 bytes
SHA-256: 90b4786343fb6b3437d01ece74735135c811139ed0f407bc2c4243ab4420ee43
font_01_sfnt_off0000f036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF036 5432 bytes
SHA-256: 2b9e76a787f05016806db61ee50a73f29c57f856885151058a2aad9eb8837e33

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