Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eea5aa51a68e9ad…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 02:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf71926dbff67ad636c6748e85e139fd SHA-1: 2f7ab1a075b0f078ffadf92a44299b85e571399f SHA-256: 7eea5aa51a68e9adcda55105103d1439d6a417be36110a51abfa7fb7888c3d46
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure to download a textbook. The presence of a malicious redirector and a large number of outbound links suggests a link farm or phishing campaign designed to lead users to malicious sites.

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=mathematical+biology+textbook+pdf In PDF document text
    • http://files.mccombwholesale.com/uploads/1/3/0/8/130874523/66696087308b750.pdfIn PDF document text
    • http://files.leeandpoon.com/uploads/1/3/1/1/131163507/gumogipapose.pdfIn PDF document text
    • http://files.makingmathmiracles.com/uploads/1/3/2/7/132710786/9520723.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/1/0431/6305/8333/files/29095924256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1341/3786/files/nuvudupinadivomuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/2216763961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8265/9493/files/nevixoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/98604112024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/zawerojapawejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/mapogoroda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5557/files/74364728918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/jawesadiratibopibulutafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/90219993765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1774/6070/files/jotikovenusukiworid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9894/files/abandono_infantil_en_el_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/kupevajefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/jasekojekeza.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 8

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_off0000668c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668C 5672 bytes
SHA-256: ef96e2883cf1688ad424ad6317b8e404958bd173fd0ef8b05399dd56df36b9a4
font_01_sfnt_off000079da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DA 10832 bytes
SHA-256: 6eb32ed39a970b49f7452ab8a4321f473fba34ff9d4af4415180df11f453f944

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