Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e4824cc1eb9f6ae…

MALICIOUS

PDF

39.6 KB Created: 2020-08-10 23:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 556f0af0807f34d5d7be55d5f19a63de SHA-1: ddbb647142215a4f3c90425de3544b2c3b875c11 SHA-256: 6e4824cc1eb9f6aebe34f58330e867ca9ee965666a2b92d8779498b89b0d6009
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector URL, which is flagged as malicious. The document body text, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF filename, suggesting a lure for users to download further malicious content. 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://ttraff.ru/wb?keyword=domicile%20certificate%20pdf%20for%20minority%20scholarship In PDF document text
    • http://files.myrtlemoon.com/uploads/1/3/1/4/131454355/330a0f9aac00b.pdfIn PDF document text
    • http://files.alisaexplainsitall.com/uploads/1/3/0/8/130874678/84279ffebe1.pdfIn PDF document text
    • http://files.thebeanstalkproject.org/uploads/1/3/1/0/131070115/3387037.pdfIn PDF document text
    • http://files.nwhsfootball.com/uploads/1/3/0/8/130874284/b6d1c7.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/1/0429/6884/2393/files/lokilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6851/3695/files/58480818135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/rimejukavatadowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/34567050384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1663/2994/files/calculus_chain_rule_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3455/9143/files/la_evaluacion_en_el_aprendizaje_cooperativo_johnson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/durga_temple_aihole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/wabekumexegodesaregopez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/82679228666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/wazarejisavaxoxerosu.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_off00005cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB0 5496 bytes
SHA-256: 99b98299be507f0c38aec8f1b4634a1dd57f146fbd65f7935a362a2ecf926efa
font_01_sfnt_off00006f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2F 10012 bytes
SHA-256: 78e456e120081a96fd44c4e5515ee3a47930dadded741ec92cea43b0c145da7e

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