Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c93ee863b41f9b…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 11:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a3945d371b2dbc53b9998d86666d438 SHA-1: d05558d9b9333b344cee40295e570cf35123fbda SHA-256: 02c93ee863b41f9bfff96aec51f1d9b42e06e6b19ea94fa2e6fd561c636209ad
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to an attempt to lead users to malicious content.

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.cc/pify?keyword=cluster+sampling+advantages+and+disadvantages+pdf In PDF document text
    • http://vosifi.biggleswadesquash.com/uploads/1/3/2/8/132814930/perobu-vovunaxit.pdfIn PDF document text
    • http://files.pedicureastridpeperkamp.nl/uploads/1/3/2/6/132682542/toburelarupuxif.pdfIn PDF document text
    • http://xobis.eternalpurposeministries.org/uploads/1/3/2/6/132681021/291332.pdfIn PDF document text
    • http://xerel.warkprimaryschool.co.uk/uploads/1/3/0/8/130813612/1304350.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/1/0429/9417/2058/files/md5_checksum_utility_v2._31.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/minecraft_set_time_day.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/garul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/42155059905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7504/files/analyseren_in_kwalitatief_onderzoek_boeije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/juzeserusokenesanojufan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/plantilla_perspectiva_caballera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/gartner_report_on_crm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/49170164810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/67386720602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/the_odyssey_translated_by_emily_wilson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/wudetalixawazogix.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBA 5324 bytes
SHA-256: f7cf56ff667a50056e39ea9ca959f914ee6035424937bba2ba7c4a41ebaaf8ce
font_01_sfnt_off000080c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C5 10332 bytes
SHA-256: badff5c5d1edc19d5b09a975726da368fd58ecef58c0b42e6bd3a8f14243bc3e