Malicious PDF — malware analysis report

Static analysis result for SHA-256 25e4837709343eb3…

MALICIOUS

PDF

50.8 KB Created: 2020-04-20 17:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 5e271bc393d8ef4ca5e6f758cd7eca4f SHA-1: 2aca5e05bb53b63689f80dff393b4bcd68b188ec SHA-256: 25e4837709343eb3b1fa9789618c240610429f305e929de1fb1d41ac9339202b
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are part of a link farm hosted on unrelated domains, suggesting a SEO spam or phishing campaign. The document body mentions 'Amadeus airline reservation system', which is likely a lure to attract users to click on the malicious links. No scripts were extracted, limiting the analysis of direct payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://pagamentos.org/uploads/1/3/1/4/131410685/131410685.html#amadeus+airline+reservation+system PDF link annotation
    • http://celestedesales.com/uploads/1/3/0/6/130604411/fiwogazas-rimapobuxi-kunadaxagawod-mesez.pdfIn PDF document text
    • http://fat-burning-soup-recipes.com/uploads/1/3/1/3/131381288/wubalotaluguro.pdfIn PDF document text
    • http://channinggroupllc.com/uploads/1/3/0/4/130488101/motobujuvix.pdfIn PDF document text
    • http://skrillextr.com/uploads/1/3/0/5/130589281/7769579.pdfIn PDF document text
    • http://underthepinksun.com/uploads/1/3/0/4/130488217/7ee4a2656726.pdfIn PDF document text
    • http://lawofficeofjenniferhaynesrose.com/uploads/1/3/0/7/130776266/nerunuzoni-sexujo.pdfIn PDF document text
    • http://press.flyuiaIn 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://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn 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_off00008dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFE 9832 bytes
SHA-256: daccd22b07c752df7a82e683b6428fb2afb0daafc3a7ac8dbcc7db6a5c7979fc
font_01_sfnt_off0000b1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1FF 4196 bytes
SHA-256: 16374c43fefb3fb406266acbe16aee7d7122405634c1b68ba02c6c95ae4378ce

Open this report in the interactive analyzer, or submit your own file for analysis.