Malicious PDF — malware analysis report

Static analysis result for SHA-256 18eee530c4aba08e…

MALICIOUS

PDF

36.8 KB Created: 2020-08-03 15:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e49b367e15ac5a121fde0e4d7d8f59c7 SHA-1: 314f116aca5d653f51cd1f6334e3f69d74033993 SHA-256: 18eee530c4aba08e48eca1f01b84f57503f10f90a96be9d0b4a4e5785a6ff97a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body itself contains a lure related to 'complete physics for cambridge secondary 1 workbook answers pdf' and a URL that redirects to this same malicious service. This indicates a phishing or scam attempt designed to lead users to malicious infrastructure.

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=complete+physics+for+cambridge+secondary+1+workbook+answers+pdf In PDF document text
    • http://files.oiim.net/uploads/1/3/0/7/130775346/woramepunare_dokufojuv.pdfIn PDF document text
    • http://files.danielshar.com/uploads/1/3/1/4/131437930/bejot.pdfIn PDF document text
    • http://files.aeea4u.org/uploads/1/3/1/6/131606666/namatipedomuxinim.pdfIn PDF document text
    • http://files.trailbrake.net/uploads/1/3/2/6/132681880/75afce4d.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/1/0433/0687/7080/files/tizisixurodegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7348/4438/files/dufenoxogosudevapejege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2490/6397/files/93151189911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/how_to_craft_a_shield_in_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/13251960083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/python_map_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1445/3410/files/8152117726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8733/files/pandas_read_sql.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_off00004ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECF 5924 bytes
SHA-256: 4851706436adb39c95552935f8874ebdd1dd4746759e8f70e609562818f8fd93
font_01_sfnt_off000062e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E9 10400 bytes
SHA-256: 7f8907102e3e241605e645c0aba0ae608060a1b2868f2b4f0d516e5b71f8aba5

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