Malicious PDF — malware analysis report

Static analysis result for SHA-256 521f468b391dc4f8…

MALICIOUS

PDF

33.9 KB Created: 2020-08-25 02:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 209bbbeb1b4b816c222d5895268f9339 SHA-1: 50f65d00e8476aaa43bc3c56935eb0a6c066771d SHA-256: 521f468b391dc4f8e8eb43686f7b6a8b15abc1bdcff51504d41d8998cc167b0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external resources, including a known malicious redirector. The document body, though partially corrupted, contains text that suggests a lure for educational content, specifically 'search access grade 6 pdf'. The primary malicious indicator is the link to 'ttraff.cc', which is identified as a malicious redirector. This suggests the document is designed to trick users into clicking the link, leading them to malicious content.

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=s%25C3%25A1ch+access+grade+6+pdf In PDF document text
    • http://files.hartfordaoh.com/uploads/1/3/1/4/131453944/8412921.pdfIn PDF document text
    • http://gubokesa.helpmyvillagekids.org/uploads/1/3/0/8/130874493/riduj.pdfIn PDF document text
    • http://bememukez.hancbass-greaterswiss.com/uploads/1/3/0/8/130814328/monututilid-lefikisabivivax.pdfIn PDF document text
    • http://files.syedarahman.com/uploads/1/3/1/4/131438069/mejupik.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/1/0437/2060/5850/files/anunnaki_los_creadores_de_la_humanidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0826/files/20940737202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/66578252756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/carrom_rules_and_regulations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0620/9702/files/types_of_anemia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/39071527015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/godivesenixigideluvareje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1926/2357/files/cache_memory_in_operating_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0463/9907/files/sinikuxipolapidesajexibix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0376/5158/files/amman_devotional_cut_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/84730851942.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 6

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_off000045c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C6 5876 bytes
SHA-256: f9c4b595d68e7ba916a7f980fee574abb9066a47fdbd749fb5969fede22aed7c
font_01_sfnt_off0000592a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x592A 9860 bytes
SHA-256: 95ffd82f6609f9a3b802d8c114139fe8f33a0529fbb2be27d3f5c335cf60af71

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