Malicious PDF — malware analysis report

Static analysis result for SHA-256 c501e56227c6cf61…

MALICIOUS

PDF

46.4 KB Created: 2020-08-06 12:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cead895cc008a51f28fe1fb2f43f5dc9 SHA-1: 13fed7137cfbfbd033c8c8507f4e395086446bb3 SHA-256: c501e56227c6cf619b7a02c3cce4cb43fecdc1d04ba8e0ced43852c0d31c180c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains, but one primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains the text 'Ethical dilemmas thesis pdf' and the malicious redirector URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly indicates maliciousness, and the presence of a redirector link confirms a malicious intent to lead the user to a harmful 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.com/wb?keyword=ethical%20dilemmas%20thesis%20pdf In PDF document text
    • http://files.sallychinea.com/uploads/1/3/0/7/130740524/cf4ee67.pdfIn PDF document text
    • http://romepoxeb.celticknot1000.com/uploads/1/3/0/7/130776487/1478754.pdfIn PDF document text
    • http://files.hackneykeepournhspublic.org/uploads/1/3/0/9/130969580/giwiviketi-pizoregil.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/1/0431/6191/1458/files/mavomofepupekixorilubidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2351/3238/files/jedavosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/piwodamidebafez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/gutalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/6734784262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4471/6199/files/nenebazoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/39053240248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/jifubovobobute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/58807591311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/grille_des_accords_guitare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0560/8099/files/hp_laser_jet_p3005_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3941/files/tuvawojogakenapot.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 4

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_off00007997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7997 5256 bytes
SHA-256: 52ef93ee8ec30112d82aebdb72f0246e42353a6a0607cd456d811f329649dd21
font_01_sfnt_off00008b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B58 9800 bytes
SHA-256: ff817289efe147c126bb9b74be127621ba6feab5c4b302c2152324d7003cb8ab

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