Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1a1ceae4942817…

MALICIOUS

PDF

82.2 KB Created: 2020-08-10 07:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4f8d781cfdc4fcc2823e26ba0156e47 SHA-1: 782f230d3a8d24851e7bdd9c520e59434e0ca629 SHA-256: 5c1a1ceae4942817099f2007457f0a6a19aa4bb36cc5028d36319321a3fa8ebd
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm. One prominent link redirects to a malicious domain, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs further supports this assessment.

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/pify?keyword=aggregate+reporting+in+pharmacovigilance+pdf In PDF document text
    • http://files.npcdb.com/uploads/1/3/0/7/130775014/papovubir-jowurezezu.pdfIn PDF document text
    • http://files.abigailscreendesign.com/uploads/1/3/0/7/130739684/weluzufodajer-maboros-gunibe.pdfIn PDF document text
    • http://files.sekulas.com/uploads/1/3/1/4/131453749/lijubisak-topafamerenotij-sutelebip-jurobumubami.pdfIn PDF document text
    • http://moxiw.danielboydkramer.com/uploads/1/3/1/6/131637814/jegeziwativaman_luxinomovesu_sokegijas.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/1/0432/6516/3422/files/33152141594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/icao_annex_16_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/5613/0200/files/all_animals_photos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/anatomy_of_cerebral_cortex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/23098259059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/pifupunolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/39727141892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/sufolumawevadipujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8392/1563/files/28303993227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6918/files/analytical_geometry_3d_vector_calculus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8565/files/94585905152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.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 3

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_off000104c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 5440 bytes
SHA-256: e562d6bd903b612fa6b5f842b4eca2b25c2f44b00d7c6ce4b47d5134c3508345
font_01_sfnt_off0001172b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1172B 10636 bytes
SHA-256: 1ea5b92da5f5126666a52af177aca7266c6c3ebd71d0d87a358b56491fed7d6f

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