Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c87a721c6a3966…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 22:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf82b3a425d70f9f51243e3e296d4b4d SHA-1: 3f1d0e078151aba0cfc0d97cd2a4dea61cc84e28 SHA-256: 50c87a721c6a3966cee9e346d629ed5f7be479f639fc00b095ec63754552aad3
194 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to a known malicious domain, likely as part of a phishing or scam campaign. The document body and heuristics indicate a lure related to 'break even point chapter pdf', directing users to a redirector URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the final malicious destination.

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.ru/wb?keyword=break%20even%20point%20chapter%20pdf In PDF document text
    • http://bufija.adamkaszycki.com/uploads/1/3/2/8/132814930/6367264.pdfIn PDF document text
    • http://files.stephanie-hixon.com/uploads/1/3/1/6/131606331/3792846.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/1/0428/7922/1927/files/62074834564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5082/5893/files/fundamentals_of_fluid_mechanics_munson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/79366049918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0269/1743/files/cfop_f2l.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7625/0776/files/lapidevezebigoxogazuruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/52473351503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0831/files/foramisegogibovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8021/4678/files/lines_written_a_few_miles_above_tintern_abbey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9583/files/71035014512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/behavior_modification_principles_and_procedures_5th_edition_free.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_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 5204 bytes
SHA-256: befcf57d7b065268155f7b862af08cd55e7b18437c899c1811b8f069a97a8c99
font_01_sfnt_off0000742d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742D 10572 bytes
SHA-256: ad34f5905d055a7fa5dee8fc2e5d0548514f028d664bfdbde3e28c7ea2a7a792

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