Malicious PDF — malware analysis report

Static analysis result for SHA-256 13afed2976438687…

MALICIOUS

PDF

43.6 KB Created: 2020-03-16 16:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 5aff952cf9da6c8b14b4d25c2fe15aec SHA-1: c24c4b0027b62452b7a87a5fe380c80a6e24e86d SHA-256: 13afed297643868783f04fb5088bf3a286bc44f6beaa88685e956f486a145876
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by an ML classifier as malicious. It contains a large number of external links, many of which are structured as numeric slugs, indicating a potential link farm for SEO manipulation or to host malicious content. The document body itself is largely unreadable but contains a URL that matches one of the extracted links.

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://advance-it.net/uploads/1/3/0/7/130740252/130740252.html#calculations+using+gibbs+free+energy+equation+worksheet PDF link annotation
    • http://pe-uae.com/uploads/1/3/0/4/130483260/monopupefelaxogoxedu.pdfIn PDF document text
    • http://insideoutcoach.nyc/uploads/1/3/1/0/131070703/5d183ec62c.pdfIn PDF document text
    • http://marc-renaud.ch/uploads/1/3/0/8/130874478/fogazirenarobelazid.pdfIn PDF document text
    • http://www.relaxationpathways.com/uploads/1/3/0/7/130775197/barujixezojibibuga.pdfIn PDF document text
    • http://www.theevanbrown.com/uploads/1/3/0/2/130288492/tijikukapagib.pdfIn PDF document text
    • http://optikstudios.io/uploads/1/3/0/6/130620479/6741033.pdfIn PDF document text
    • http://www.safebarsboston.com/uploads/1/3/0/5/130589998/232365.pdfIn PDF document text
    • http://ajameskolar.com/uploads/1/3/0/3/130313605/nurosiro.pdfIn PDF document text
    • http://stonescapecompanies.com/uploads/1/3/0/2/130271035/64f2c171634.pdfIn PDF document text
    • http://hostmaster.irissrl.org/uploads/1/3/0/7/130740429/5659667.pdfIn PDF document text
    • http://funlolacokershop.com/uploads/1/3/0/9/130969190/6956810.pdfIn PDF document text
    • http://jerremyholland.net/uploads/1/3/0/5/130588810/dc0b64ce64007ac.pdfIn PDF document text
    • http://mta-sts.jeffcubos.com/uploads/1/3/0/5/130588640/28182765.pdfIn PDF document text
    • http://usf.graysbooks.com/uploads/1/3/0/6/130604317/7129234.pdfIn PDF document text
    • http://indianarivers.org/uploads/1/3/0/8/130873962/dovixinotob-beraseberaje-mepexoxire-moluxananefezil.pdfIn PDF document text
    • http://www.antsrecovery.co.uk/uploads/1/3/0/6/130605368/mezize.pdfIn PDF document text
    • http://hostmaster.newtemployment.co.uk/uploads/1/3/0/6/130622013/pemikuna.pdfIn PDF document text
    • http://digitaltacklebox.ca/uploads/1/3/0/3/130323329/4629352.pdfIn PDF document text
    • http://strawhatgames.com/uploads/1/3/0/3/130313340/jagosunogova.pdfIn PDF document text
    • http://theliafund.org/uploads/1/3/0/6/130604377/9131251.pdfIn PDF document text
    • http://webdisk.brandtmarineinc.com/uploads/1/3/0/3/130323092/3d08833e.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000823e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 7692 bytes
SHA-256: f2464b5a1df83a8238f9c2e5f8239a2510f770b18c440a9158a730e443dc5d86

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