Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c85b70462f4ebe…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 05:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae5e5907ff808126b63b85dcf7ac18f9 SHA-1: c919da4d57dfcd3b8f066ebf48f384ddc796c13a SHA-256: 62c85b70462f4ebecaa76b31d5d7b762bbd10288a88c2ee75df77f0373b24b07
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as free downloads, but the primary link redirects to a known malicious redirector. This indicates a phishing or scam attempt, likely to deliver a second-stage payload or lead the user to a fraudulent site. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=space%20maintainers%20in%20pediatric%20dentistry%20pdf In PDF document text
    • http://files.loverepurposed605.com/uploads/1/3/1/0/131071243/e7c377.pdfIn PDF document text
    • http://files.restyle-homestaging.com/uploads/1/3/0/7/130775557/4f18c3a27a480.pdfIn PDF document text
    • http://files.ascotdance.co.uk/uploads/1/3/1/8/131871864/ravojomewiwojun.pdfIn PDF document text
    • http://files.cathleenmargaret.com/uploads/1/3/0/7/130775027/woxubo_mixuzegaxi.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/1/0437/4285/5319/files/38438440278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/pitepapetuwomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/tumuvemododadefom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6001/8852/files/viruduravugisavexijawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7185/files/fosavalemeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3051/7672/files/61067421798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/yield_point_phenomena_in_metals_and_alloys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vebuvugoxajazafegofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/vimovivovabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4600/1045/files/capillary_gel_electrophoresis.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_off0000598d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x598D 5472 bytes
SHA-256: 6403da56e9609f36a097b1c0801ea9b0974b62e0792e4129fbf2afc45502347e
font_01_sfnt_off00006c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C10 10792 bytes
SHA-256: cf624f72db52e7308106de6dcc2829734a2046ff4fb7a6671c9e2dd3d997a16d

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