Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d8dc388347ab7a…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 20:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08cfe6320b678c5cf50ba5c0f6f01a86 SHA-1: 9c264dcaa9d0785bb37ea91a75b29e6ea3a14417 SHA-256: 77d8dc388347ab7accfff65e2c39f0cdd6fc9780df9c76fce9b6a8db75a8f4ba
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a likely phishing or malware distribution attempt. The embedded content suggests a lure related to 'Bsc nursing form date 2020 rajasthan'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links points to SEO manipulation for traffic redirection.

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/pify?keyword=bsc+nursing+form+date+2020+rajasthan In PDF document text
    • http://fivugugu.angelaherbert-hodges.com/uploads/1/3/2/7/132740763/1775cf58f.pdfIn PDF document text
    • http://files.nxintl.com/uploads/1/3/1/0/131070911/nufawefomojoge_tadugusovok.pdfIn PDF document text
    • http://vomapaxa.roxannesmith.ca/uploads/1/3/2/7/132740214/mujefedeko.pdfIn PDF document text
    • http://files.shaunmartinmusic.com/uploads/1/3/1/3/131379382/6d7224.pdfIn PDF document text
    • http://files.cartooncaveman.com/uploads/1/3/1/4/131409200/e4409dfe48f.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/1/0437/5917/3784/files/xiwedetonoxudunepopexufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/lalugaweminumewafawiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6935/8758/files/41241809087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/gijutifizup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevuwuvufotolotatagonisex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/gejujefebidavovozivet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/bomiwadonisogeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1063/0311/files/woruvejimerevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/arnold_chiari_malformation_radiology_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/nmr_spectroscopy_principle_and_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/8679885062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/nomerarenoronafezulanapip.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_off000068bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 5804 bytes
SHA-256: 308ea25968e97f5eebf1dc68dbfcbe11477c26138f215d97c334fae77ca5f463
font_01_sfnt_off00007c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C52 14060 bytes
SHA-256: 2d978f4a67fb6cebcb03b791e6ea2b79e7d1d2809f2e077d951c4f449704a3b6

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