Malicious PDF — malware analysis report

Static analysis result for SHA-256 b217302536df213e…

MALICIOUS

PDF

38.2 KB Created: 2020-06-12 00:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5255e3cba0f69b7fb0cf5a36b072e3c7 SHA-1: 5f19535f2061419dccd44d45fb1a3e892c18ad86 SHA-256: b217302536df213e3ee7c37f5ee900ade25c15ddc5b94e9faa1bf9fac79cbe95
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 numerically or generically named PDF files hosted on various domains. The document body text, though partially corrupted, suggests a lure related to 'Constituio federal artigos de 194 a 200 pdf'. This indicates a likely SEO spam or link farm attack pattern designed to drive traffic to these external sites. No scripts were extracted, and the primary malicious activity appears to be the distribution of numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mclaughlinassociates.com/uploads/1/3/1/3/131380107/131380107.html#constituio+federal+artigos+de+194+a+200+pdf PDF link annotation
    • http://trigonhealth.com/uploads/1/3/0/6/130639958/65931.pdfIn PDF document text
    • http://myinclusiveclassroom.com/uploads/1/3/0/8/130813961/5231028.pdfIn PDF document text
    • http://aguirrefoundationrepair.com/uploads/1/3/1/8/131856815/7191725.pdfIn PDF document text
    • http://stalingelhoef.com/uploads/1/3/0/8/130874136/bosuvanu.pdfIn PDF document text
    • http://nonnahsvirtualadminservices.com/uploads/1/3/0/5/130544131/zagexawe-rurosetofexovi-ralizafev-zawiximap.pdfIn PDF document text
    • http://worksbyfaith.net/uploads/1/3/1/0/131070719/7e8a6a5fc4.pdfIn PDF document text
    • http://sabinescottage.com/uploads/1/3/0/5/130539205/8dd1a256db5d.pdfIn PDF document text
    • http://deepdivelearning.com/uploads/1/3/0/5/130588377/a2ed95fa129862.pdfIn PDF document text
    • http://fandori.com/uploads/1/3/0/6/130639567/9613037.pdfIn PDF document text
    • http://mta-sts.mail.tnrangers.org/uploads/1/3/0/4/130488750/4364706.pdfIn PDF document text
    • http://autoaccidentlawyerswtl.com/uploads/1/3/0/6/130622077/6568137.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://tawumigudifo980931470.files.wordpress.com/2020/06/mitobodobefefenefuvove.pdfIn PDF document text
    • https://pamowuvesez.files.wordpress.com/2020/06/29077098425.pdfIn PDF document text
    • https://dilupojuze.files.wordpress.com/2020/06/94001332971.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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_off000065b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B1 12452 bytes
SHA-256: 0d162d432bd5c7454888f66faa127cd21c3949fa194ee3cb83bf8f7581a1a61a

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