Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed472d8d79d66fc7…

MALICIOUS

PDF

51.5 KB Created: 2020-03-18 12:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-07
MD5: 01c2bbc442dcce03609e6539cb987cdd SHA-1: 9413fb5edeefbc311ae3c9ee7a195040d77c28b8 SHA-256: ed472d8d79d66fc703184e5bbfb0608f0bd3f570c8d30ab47cc4c95ab7797603
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, which is indicative of a link farm or SEO manipulation tactic. The document body text, though partially corrupted, includes a Spanish phrase related to textile fibers, which may be a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URLs supports this assessment.

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://allamericandogexpo.com/uploads/1/3/1/1/131163864/131163864.html#investigue+los+diferentes+tipos+de+fibra+textil+que+produce+honduras PDF link annotation
    • http://coldicezero.com/uploads/1/3/0/4/130476427/6263373.pdfIn PDF document text
    • http://comipor.com/uploads/1/3/0/2/130291908/kalotazafosupuv_weralegifa_zijenavawaw.pdfIn PDF document text
    • http://claireleisringbuerkcounseling.com/uploads/1/3/0/3/130379341/d4806992664.pdfIn PDF document text
    • http://www.johndurhamphotography.co.uk/uploads/1/3/0/2/130270892/towativoguwuwe_defederalo_xogimidekofo.pdfIn PDF document text
    • http://webdisk.caseofstardom.com/uploads/1/3/0/6/130621808/tebokoterowu.pdfIn PDF document text
    • http://abnetconstruction.com/uploads/1/3/0/2/130288762/noruvexujur.pdfIn PDF document text
    • http://certifiedmedicalequipment.net/uploads/1/3/0/7/130740049/84773f.pdfIn PDF document text
    • http://knitandwhimsy-me.lizaeckert.com/uploads/1/3/0/7/130738621/xibuwezikejutuve.pdfIn PDF document text
    • http://www.kelseonabate.com/uploads/1/3/0/5/130540134/3112441.pdfIn PDF document text
    • http://sober-housing.net/uploads/1/3/0/6/130604016/084568da39ed1.pdfIn PDF document text
    • http://initiativesduvivreensemble.org/uploads/1/3/0/2/130270907/8546941.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://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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2B 10116 bytes
SHA-256: 8c8ab44616a5d9de9f269199d1cbf29f03f1f142caa205c0d9df4e0a95259651
font_01_sfnt_off00009f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4B 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_02_sfnt_off0000a8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B2 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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