Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd7afd5cb6ea270…

MALICIOUS

PDF

39.8 KB Created: 2020-03-09 11:19:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 3c7d01bc5058a22d941636691da6bfe2 SHA-1: 51d1dcd6ce72d744b70259e52fa883f3c8dc15d2 SHA-256: 3bd7afd5cb6ea2702849bb86bd866235c810be3fcaa38f8b0c4ba7727873cd0e
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body, though partially obfuscated, contains text related to 'Linee guida autismo 2018' and references the wkhtmltopdf tool, suggesting a lure to a website that likely hosts malicious content or phishing pages. The primary attack vector appears to be directing users to these external URLs.

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://wcd-jtdgd98u.mgh-r.ch/uploads/1/3/0/3/130379503/130379503.html#linee+guida+autismo+2018 PDF link annotation
    • http://craftcritic.beer/uploads/1/3/0/3/130379213/3398738.pdfIn PDF document text
    • http://monarteonline.com/uploads/1/3/0/5/130590312/dezotolo-xitetugifu-lugiparuvo-panujilefesizun.pdfIn PDF document text
    • http://www.hokmahglobal.com/uploads/1/3/0/7/130776727/0b136e01524.pdfIn PDF document text
    • http://hostmaster.onedocs.co.uk/uploads/1/3/0/5/130590555/gijiwom-xubivagunufaxi-wonumi-tidafid.pdfIn PDF document text
    • http://strangebrau.com/uploads/1/3/0/7/130738511/jebejapixu.pdfIn PDF document text
    • http://tawnellhobbs.com/uploads/1/3/0/4/130477335/6610848.pdfIn PDF document text
    • http://www.sewinganddesignbycarly.com/uploads/1/3/0/6/130604350/4176686.pdfIn PDF document text
    • http://duane-thomas.com/uploads/1/3/0/6/130604933/2760848.pdfIn PDF document text
    • http://ww2.edlynfornoles.com/uploads/1/3/0/2/130289158/wetumafunup.pdfIn PDF document text
    • http://luperroboticsltd.org/uploads/1/3/0/5/130541944/juwovenu.pdfIn PDF document text
    • http://oscarsterte.com/uploads/1/3/0/6/130639997/kogalag_nubebesularur.pdfIn PDF document text
    • http://nicksandmay.com/uploads/1/3/0/8/130874102/d14280bbc1baa41.pdfIn PDF document text
    • http://uptown.eesforjobs.com/uploads/1/3/0/6/130621636/jukopenagikipudita.pdfIn PDF document text
    • http://mrscastillo.com/uploads/1/3/0/7/130740211/2522632.pdfIn PDF document text
    • http://s-p-q.org/uploads/1/3/0/7/130739934/7818473.pdfIn PDF document text
    • http://www.bodyrevivalmassage.org/uploads/1/3/0/6/130604923/nabifuxuv_bikow.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
🗂 Part of campaign: betaregistration.com 5 samples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7260 8140 bytes
SHA-256: 6351b6a417f238c61ce38300745e0ccc326c4aeefd04568ca95e5502efd62724