Malicious PDF — malware analysis report

Static analysis result for SHA-256 01857dbb65e66a98…

MALICIOUS

PDF

49.7 KB Created: 2020-10-10 05:34:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-08
MD5: 6b81972e4e4c9116a9149d12d1ce5510 SHA-1: c0046035a7a83d6b5f1f5a0fe6670a3f2f777a3b SHA-256: 01857dbb65e66a981cee6b366cd253c6e3a2ce35acf778ae1e7c76ac65f1edba
194 Risk Score

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://ggtraff.ru/strik?keyword=los+cosacos+de+rusia In PDF document text
    • http://files.illlaladesigns.com/uploads/1/3/1/3/131383475/woxufikud_zutevogorar_vatuxizunex_nasenujaveli.pdfIn PDF document text
    • http://files.michigan-alpacas.com/uploads/1/3/1/4/131453365/vafifosos.pdfIn PDF document text
    • http://surisat.michellelewisphotography.com/uploads/1/3/1/4/131438110/revivudidenoz_kuzuzefejaluso.pdfIn PDF document text
    • http://wubiv.alexandriatalley.com/uploads/1/3/0/7/130775565/tejexexetanonot_lomudi_lobokojoxo_vatexiwes.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000083c0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000083c0.bin)
    • https://uploads.strikinglycdn.com/files/a78ddd57-07a7-4f3f-a9bf-98397205a4b2/gesidazazabevedidiwak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a55a9442-f792-4a15-b028-8a7c86b73023/gafibonuxojijuxofijegun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fea83ad-db1d-430a-998c-b67edffdcd7f/67701521249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0faa1c5-433b-4df6-a1e0-037cb53bb123/70766967814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b4ad275-3570-42a7-9f82-5b09c4be85c1/87346499798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36ac513e-3879-498d-b528-26d3d0790948/15352171329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/686ea56d-506a-4157-9df4-e699854aa84f/91012225100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c728851-d91f-4825-a9ed-58f29cef6681/49526651721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/9438/9151/files/percy_jackson_and_the_greek_heroes_google_docs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5842/9089/files/kaiser_authorization_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9007/6067/files/97306202942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/cast_your_burdens_upon_the_lord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7914/3076/files/danajukivuxasenaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10499a22-d4e7-4029-80a8-b57e684a9e2c/11350711354.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 extracted file (font_00_sfnt_off000083c0.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 4840 bytes
SHA-256: 0b5846e5af61c886d6cdc8a19205c3876aa0b28b16f89de1a8826dc840952a08
font_01_sfnt_off00009443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9443 11168 bytes
SHA-256: 85fecaf0eae8e4e5e0e3febff47bbdbace110219ecc2e83c38ab00f69bb92dd3

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