Malicious PDF — malware analysis report

Static analysis result for SHA-256 853890003d8242b0…

MALICIOUS

PDF

45.4 KB Created: 2020-08-08 12:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc0cd62394430c4006a430c8b0a45347 SHA-1: e6842eb02c36fd3230a2f381222a9e1f2a1300d3 SHA-256: 853890003d8242b07df058bdabf3d4472dd8f37586b028b264e0e91407b7b494
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a redirector service designed for SEO spam and phishing. The document body text and embedded links suggest a lure for downloading a PDF, which is a common tactic for distributing malware or leading users to malicious websites. The presence of a malicious redirector link indicates an attempt to lead the user to a compromised or malicious site.

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=complete+catechism+of+the+catholic+church+pdf In PDF document text
    • http://vutoxabef.2am.ency-education.com/uploads/1/3/2/3/132302780/83335.pdfIn PDF document text
    • http://files.forbesirishdance.com/uploads/1/3/1/3/131381946/koninuwizufogutoni.pdfIn PDF document text
    • http://xetirifa.sahasrashope.com.au/uploads/1/3/1/4/131453323/6456485.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/1/0440/9825/7048/files/mifowatitiletuxisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/zewagoxavadigewap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2036/9567/files/articles_on_education_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/mokugesawapedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/29390543582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/30118062520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/fexixegujojisenol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/files/quran_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4831/9638/files/cybersecurity_capability_maturity_model_c2m2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/78204919216.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 1

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_off0000747b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747B 5300 bytes
SHA-256: d90350c539bddac3e75bbf9cf69350934d1718ff558e399dfca6630dfa1955b4
font_01_sfnt_off0000864f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864F 10144 bytes
SHA-256: efc688d5f8863ef6fde4ef80aa01d83dd321fce5b0d4e5749553b0c01381708c

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