Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b48d1c03c438f8…

MALICIOUS

PDF

40.8 KB Created: 2020-03-10 08:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 561c5a49d8b35484d9281dd23ce92c28 SHA-1: 9dceb16825ce49fcd26254fea75f8c0881320ef9 SHA-256: e8b48d1c03c438f8896bacffad32513b2459daf5155a32092f91e3e2d2fc5629
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file exhibits characteristics of a link farm, with a high density of external URLs pointing to various domains. This technique is often used to artificially inflate search engine rankings or to distribute malicious payloads through seemingly innocuous links. No scripts were extracted from this sample, and the document body content is largely unreadable binary data, making it difficult to ascertain a more specific attack pattern beyond the link farm. The primary IOCs are the numerous external URLs found within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://baseball.peakathleticsystems.com/uploads/1/3/0/3/130379408/130379408.html#simple+blues+riff+chords PDF link annotation
    • http://www.mcveystransport.com/uploads/1/3/0/5/130550724/2e7a82fbfb53d.pdfIn PDF document text
    • http://materialsdesign.net/uploads/1/3/0/5/130588506/9976854.pdfIn PDF document text
    • http://plunkettandgibson.com/uploads/1/3/0/3/130312950/sifin.pdfIn PDF document text
    • http://cyclingretreats.com/uploads/1/3/0/8/130874121/kogos.pdfIn PDF document text
    • http://www.lilolehardware.com/uploads/1/3/0/8/130813632/dikuxak.pdfIn PDF document text
    • http://trentmoorephotography.com/uploads/1/3/0/4/130436096/kunozomivelibivas.pdfIn PDF document text
    • http://thechinahustle.us/uploads/1/3/0/7/130739704/xelevegaz_wejabo_puxel_woditixexas.pdfIn PDF document text
    • http://joyfulsoundchoir.us/uploads/1/3/0/2/130272575/8694830.pdfIn PDF document text
    • http://billmcsharer.com/uploads/1/3/0/6/130620807/75bd65.pdfIn PDF document text
    • http://www.vervaekescience.com/uploads/1/3/0/7/130739933/7df0f55bb.pdfIn PDF document text
    • http://forgelouisville.net/uploads/1/3/0/2/130271031/daxujusipu.pdfIn PDF document text
    • http://edumorethailand.com/uploads/1/3/0/4/130436204/5104828.pdfIn PDF document text
    • http://rachaelschafergallery.club/uploads/1/3/0/6/130621111/zivigezapofetos-fizevumir-misasarixavuj-tigaxik.pdfIn PDF document text
    • http://aceresumes.com.au/uploads/1/3/0/6/130621431/368f9f3f64.pdfIn PDF document text
    • http://newlifestylesnepelenaferraretto.com/uploads/1/3/0/5/130548108/2787489.pdfIn PDF document text
    • http://archivistar.com/uploads/1/3/0/7/130776370/bukixiziwatun_fokixokusomuz_zigidaf_tekevazow.pdfIn PDF document text
    • http://pre.io/uploads/1/3/0/8/130813769/luxor.pdfIn PDF document text
    • http://honeymoonsandtours.com/uploads/1/3/0/6/130639714/pixan.pdfIn PDF document text
    • http://baypointvillas.com/uploads/1/3/0/5/130539458/nokebakakasez.pdfIn PDF document text
    • http://www.iwdtimetochange.com/uploads/1/3/0/5/130590233/576853.pdfIn PDF document text
    • http://hostmaster.axel-kuehn.com/uploads/1/3/0/3/130313002/1672211.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 5

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_off00007730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 7384 bytes
SHA-256: c273d04b05c2b49593bae459553ec69c16e3776f3ac4a698a856bcafb932bc1d

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