Malicious PDF — malware analysis report

Static analysis result for SHA-256 50799b822b620b11…

MALICIOUS

PDF

40.2 KB Created: 2020-08-28 11:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36c67d5bd67e06a6d021a1373fc3f9a2 SHA-1: 8ebbeb296c6d147e2ab955c8b9faa6da2606ad90 SHA-256: 50799b822b620b11c70b477231d757cbfe1f509223678ededf1fc147fe135406
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing attacks by overwhelming users with choices or obscuring the true destination.

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://ttraff.ru/pify?keyword=bangles+and+beads In PDF document text
    • http://files.northgatelodgeequestrian.com/uploads/1/3/1/4/131437044/3caacc25e.pdfIn PDF document text
    • http://xawumo.elizabethcyr.com/uploads/1/3/1/4/131453872/nogasasesesan-wezavukesipa.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/1/0434/3519/6582/files/16252399655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/tatenuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3757/6603/files/brothers_grimm_spectaculathon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/brand_archetype_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7446/1589/files/bumap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/90126959109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6376/7203/files/minecraft_skin_editor_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/fusatikenazaseguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/28585249624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/49620126776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/66792660698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/guitar_chords_beginner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6791/6696/files/graphic_design_flyer_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/bse_odisha_history_book.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 6

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_off00005e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 5088 bytes
SHA-256: 3bcc18ff1a22063eb96c8fa2bb0f353eaafecc832682593205a88ffb859575a0
font_01_sfnt_off00006fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 10696 bytes
SHA-256: 36ed53f47eb37688a7a1954e43e373008c5196cd9de4ea5b4546da847e963cf4

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