Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf034feddca24ae6…

MALICIOUS

PDF

82.1 KB Created: 2020-03-12 02:11:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 7a39b8e2508a47217e077a5320716379 SHA-1: 900875b7706a01c8f405ad0c9207d0ed23ddad00 SHA-256: cf034feddca24ae650dd96342a0f7749417da97ba99a38f2ecaab214950d8518
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that points to a page with a title related to Indian scientists and inventions in Tamil. This suggests a lure to attract users to click on the numerous embedded links, which are likely designed for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://drobgyn.net/uploads/1/3/0/6/130621575/130621575.html#indian+scientists+names+and+their+inventions+in+tamil PDF link annotation
    • http://micahtwilson.com/uploads/1/3/0/4/130476493/0bc2867a448.pdfIn PDF document text
    • http://www.nickalisknight.com/uploads/1/3/0/7/130776070/3846679.pdfIn PDF document text
    • http://farmnavigation.com/uploads/1/3/0/2/130274088/zufobirixoxosaji.pdfIn PDF document text
    • http://uvgelpolish.com/uploads/1/3/0/5/130551185/buwoxibijefo-ganur-joxawodawoparu-zomowuzeweb.pdfIn PDF document text
    • http://nothingeasylifestyle.com/uploads/1/3/0/7/130776381/rikadepagajavano.pdfIn PDF document text
    • http://groom-construction.com/uploads/1/3/0/7/130775203/zidujexuwidu-widig-soparitopipi.pdfIn PDF document text
    • http://kdmorano.com/uploads/1/3/0/6/130605017/4590730.pdfIn PDF document text
    • http://orleansmedicalcenter.org/uploads/1/3/0/5/130546543/1da614a47.pdfIn PDF document text
    • http://santeeautodetail.com/uploads/1/3/0/7/130775843/5572845.pdfIn PDF document text
    • http://wd7nz.bpmtc.com/uploads/1/3/0/5/130590374/wupozomite.pdfIn PDF document text
    • http://lennygartstudios.com/uploads/1/3/0/5/130588492/popumiwe.pdfIn PDF document text
    • http://propertynearyou.ph/uploads/1/3/0/8/130814058/6054173.pdfIn PDF document text
    • http://womadixfund.org/uploads/1/3/0/9/130969000/valojaxafijek-gikenakop.pdfIn PDF document text
    • http://www.democraticgovernanceinternational.com/uploads/1/3/0/7/130739618/rozaweweva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D0 25304 bytes
SHA-256: 0f94fe996a96367cb0acbf72858008d33508ea6a5653bdb716d05bbff078efa4
font_01_sfnt_off0000faaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAA 8800 bytes
SHA-256: df8d5164745f4b2d08becd6eba32d790b5b8d392026d93a94ca568c3fd040431
font_02_sfnt_off00011b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B82 2604 bytes
SHA-256: 83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe
font_03_sfnt_off000124b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B5 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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