Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b24b2a7fba06bb9…

MALICIOUS

PDF

40.0 KB Created: 2020-08-12 13:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 669ea3e956fcedcada994606680c28a9 SHA-1: 2343d68167658a7d5d9bccc674133638fa2a502a SHA-256: 7b24b2a7fba06bb996af0e519049b7acd811938410af5d812c4ef9e142e7c8d2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm. One of the primary links redirects to a known malicious redirector, suggesting an attempt to lure users to a malicious site under the guise of a document download. The ML classifier also strongly indicated maliciousness.

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=cultural%20diversity%20in%20the%20classroom%20pdf In PDF document text
    • http://files.uscitizenshipprepcourse.com/uploads/1/3/1/3/131380341/7202533.pdfIn PDF document text
    • http://nemaraba.sanmarcoscamp.com/uploads/1/3/0/7/130775045/1641592.pdfIn PDF document text
    • http://ribiri.flowjem.com/uploads/1/3/1/1/131164250/fawagomofekirupemab.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/1/0429/4246/4166/files/wasesawil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/tell_me_about_yourself_answer_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/93036808747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7794/files/1168757797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4383/9385/files/abstract_algebra_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/momudimax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/favirujotore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/ansiedad_social_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/zokafixafovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/74881824856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7430/6727/files/jivomibesinotisovoroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/79667870803.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 2

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_off00005cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD3 5460 bytes
SHA-256: 27ae564143c7ca2b6da95e76df62d00c97e9d3ac6c2c2c9bae30cb05ec61956f
font_01_sfnt_off00006f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F46 10544 bytes
SHA-256: d0073680270871cacf8c93a0c8a3b71cf05781b702edd8a13ba1682bb9b8738a

Open this report in the interactive analyzer, or submit your own file for analysis.