Malicious PDF — malware analysis report

Static analysis result for SHA-256 424ff7fa836eec94…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 02:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7af04433f155ac91b1571fd75b3fe8a2 SHA-1: 6e8d69d513c721e452f9f0efaf330e7bfd90a011 SHA-256: 424ff7fa836eec94d2641586606ea99606094ebdca395976b65c31110f87da0c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation. One prominent link, 'https://ttraff.cc/pify?keyword=paulo+coelho+libros+pdf+gratis+veronika+decide+morir', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL and references to book downloads, indicating a social engineering lure to drive traffic 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=paulo+coelho+libros+pdf+gratis+veronika+decide+morir In PDF document text
    • http://files.d-93constructionupdates.com/uploads/1/3/0/9/130969151/xawagapopipuxa_kilefupi.pdfIn PDF document text
    • http://zexop.threetreesart.com/uploads/1/3/2/8/132814930/difinamunedota.pdfIn PDF document text
    • http://files.matthewmayes.net/uploads/1/3/0/7/130738765/fojatajor.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/1/0435/0833/4744/files/nedejuladur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/28657766720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1454/4808/files/jujejusuxavadox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/parallels_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3365/5446/files/sebolikurenijupuzeselu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/vufefosatukidimijoniku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4229/2390/files/76318790113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4002/1407/files/podelexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/mupesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/vapomeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/58810016977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/53945970798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/voriwazikevamapaziru.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 4

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_off000063b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B0 5836 bytes
SHA-256: 133d126fa4c408c58c2bc3334577f0c4d4033f8ff20246e8290d7ca44a014e17
font_01_sfnt_off00007767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7767 10288 bytes
SHA-256: e38813eec8d06fd75785bb5f3f6335e6fdc9b296775a3701c2200d6cb74e4f82

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