Malicious PDF — malware analysis report

Static analysis result for SHA-256 28b2c6f780f5ef99…

MALICIOUS

PDF

36.0 KB Created: 2020-08-19 20:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 602c5e673e6e0d9b8453a3d465bfbd25 SHA-1: 63dc8c3c45ece9e5933b23132f676ee945e90405 SHA-256: 28b2c6f780f5ef990614833319a887ccb9f2e3504b40be77b45ec5518fd7a35a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links, many hosted on Shopify, likely to obscure the malicious redirector. The document body contains a URL that redirects to a malicious site, attempting to trick the user into downloading a file under the guise of a business law book.

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=malaysia+business+law+book+pdf In PDF document text
    • http://mopir.daniellemckee.org/uploads/1/3/0/7/130740257/4483990.pdfIn PDF document text
    • http://files.helpsavetroubledteens.com/uploads/1/3/1/4/131412235/8fd600177ec.pdfIn PDF document text
    • http://jotite.heart-tokushima.com/uploads/1/3/1/4/131407498/7147768.pdfIn PDF document text
    • http://files.cassandramlambros.net/uploads/1/3/0/9/130969082/gevazogiketuwu.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/1/0429/8607/8369/files/72441790508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/health_psychology_understanding_the_mind_body_connection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/clear_vairable_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/80157501280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/11344871887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/moguwiboruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/sututasomulojixanit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/fivikadumulav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/advanced_english_grammar_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/zujowonirof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4977/7312/files/tozezilur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/xogarujifenorek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/levinoda.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 5

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_off00004e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6A 5344 bytes
SHA-256: 46628595ea573d7f04e84f6643aea56ebb35a697fa88c4be9b5cf12f566d68ae
font_01_sfnt_off000060c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C2 10088 bytes
SHA-256: 8c13b13079173c118c3c3869ef06e5d88bbc213f621ae6d199936c2b79c93a8d

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