Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f22839030e6306…

MALICIOUS

PDF

47.8 KB Created: 2020-10-02 23:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d22977e9ba076ecbf220af88264cc520 SHA-1: 2e22d5bd6911db8d11fc7401fb6885f4c5aaab5f SHA-256: 63f22839030e6306787ffa965915e8121cb04da6434c1602a460876cb4c1a4a8
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL. The document body also contains the same redirector URL, suggesting an attempt to trick users into clicking it for a 'free download'. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/strik?keyword=deontology+book+pdf In PDF document text
    • http://files.krgriffiths.org/uploads/1/3/0/8/130874129/96dffd9.pdfIn PDF document text
    • http://fujoji.millbayrvresort.com/uploads/1/3/0/8/130814526/nevano.pdfIn PDF document text
    • http://muvodu.coonrapidscommunitystrengthfoundation.com/uploads/1/3/1/3/131380213/310f17419ce87.pdfIn PDF document text
    • http://nuzewi.rearfacingtoddlers.com/uploads/1/3/2/3/132303001/51b81e2f5.pdfIn PDF document text
    • http://konojag.natashaspeaksrussian.com/uploads/1/3/0/8/130814340/ladasupa.pdfIn PDF document text
    • http://zamoxijus.jackclutterphotography.com/uploads/1/3/2/8/132814097/293603.pdfIn PDF document text
    • http://puweso.calligraphy-theletteraryarts.com/uploads/1/3/0/8/130813821/ebf74b.pdfIn PDF document text
    • http://nefujo.fashionspeaks.net/uploads/1/3/1/8/131856166/81317657fadde28.pdfIn PDF document text
    • http://wedovimu.aglimpseofhues.com/uploads/1/3/0/7/130739967/1176205.pdfIn PDF document text
    • http://files.anbinhgallery.com/uploads/1/3/0/7/130775668/3018565.pdfIn PDF document text
    • http://files.wcsea.us/uploads/1/3/1/1/131163856/mezurimateserumobow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4388/0103/files/cristiano_ronaldo_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/68191670957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/insurgent_book_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2147/files/macys_liquidation_department_sales_contacts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6933/6471/files/querido_john_descargar.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

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_off00007b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0A 5032 bytes
SHA-256: 17cb54fed58e8907d64c821e11a3d16417399f462e44e9fb65d9f8af2ee97632
font_01_sfnt_off00008c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C50 11416 bytes
SHA-256: b5db6cca172c4314445a2187f21adecadddbb09c4ddfeb72c09537d80f834302

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