Malicious PDF — malware analysis report

Static analysis result for SHA-256 e99fc614f7b949d6…

MALICIOUS

PDF

39.6 KB Created: 2020-03-31 01:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 95d59d820a128c5ebd15f4972c458785 SHA-1: 25ee96b5b0848dd530b139c2171d064a08a880ce SHA-256: e99fc614f7b949d6a96fc2dbad874fe28aa7d85d4b77d7dde17db8a9a86f22fa
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, characteristic of a link farm. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to distribute malicious content or engage in SEO abuse. The embedded URLs point to various domains, suggesting a broad distribution network. No scripts were extracted, and the document body is largely unreadable binary data, making it difficult to ascertain the exact nature of the payload beyond the link farm. The primary attack vector appears to be directing users to external resources via these 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://lancasterec.com/uploads/1/3/0/7/130740262/130740262.html#triangulo+acutangulo+obtusangulo+e+retangulo PDF link annotation
    • http://matthewsncgutters.com/uploads/1/3/0/2/130271080/8636331.pdfIn PDF document text
    • http://dragondrones.org/uploads/1/3/0/5/130542692/latezewotidubibexo.pdfIn PDF document text
    • http://cfdaccounting.net/uploads/1/3/1/4/131408772/f3999bcc05456f0.pdfIn PDF document text
    • http://sedonajewelryappraisals.com/uploads/1/3/0/6/130621307/ba3b20.pdfIn PDF document text
    • http://takasshoetique.net/uploads/1/3/0/5/130590361/2d0b927782889.pdfIn PDF document text
    • http://drwenterprises.net/uploads/1/3/0/8/130814360/7090894.pdfIn PDF document text
    • http://priorityrecruitingsolutions.com/uploads/1/3/0/7/130739052/nebivuvazititivasogo.pdfIn PDF document text
    • http://rotokinetics.net/uploads/1/3/0/5/130543052/dufezikiwuval-movijenupojisi-pinajumatujigef-widajorodejij.pdfIn PDF document text
    • http://pcbyrd.com/uploads/1/3/0/5/130589124/6514bb938f46.pdfIn PDF document text
    • http://lakeviewtheseries.net/uploads/1/3/0/4/130488470/ec34a8e3b45f43.pdfIn PDF document text
    • http://tweetsoup.com/uploads/1/3/1/4/131407511/pagawop-webawomo-jolez.pdfIn PDF document text
    • http://defragrancehouse.com/uploads/1/3/0/4/130479210/9cce66ca.pdfIn PDF document text
    • http://huckleberriesartisanpastries.com/uploads/1/3/0/5/130590158/8a75c291.pdfIn PDF document text
    • http://materieleselconstructor.com/uploads/1/3/0/9/130969842/8651945.pdfIn PDF document text
    • http://andoverphotobooth.com/uploads/1/3/1/4/131452743/zojed_bogukiw_fixetisito_vavisigu.pdfIn PDF document text
    • http://melonismorningnudge.com/uploads/1/3/0/2/130288465/gopigidedorux.pdfIn PDF document text
    • http://shantireikiyogawellness.com/uploads/1/3/0/9/130969714/4890175.pdfIn PDF document text
    • http://shawnbyoung.com/uploads/1/3/0/5/130588721/8986021.pdfIn PDF document text
    • http://flatlinermusic.com/uploads/1/3/0/7/130739237/xorowadokamuje_todonilovanar_wegowox_fatanadowa.pdfIn PDF document text
    • http://dasoulolife.com/uploads/1/3/0/6/130639574/moxebased.pdfIn PDF document text
    • http://openingeyesllc.org/uploads/1/3/0/7/130775735/bibis.pdfIn PDF document text
    • http://mdlawschaumburg.com/uploads/1/3/0/2/130288301/busasumabusa.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 1

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_off00006df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF3 9852 bytes
SHA-256: 9a256fc377486148e023a1d93d8256313fb35c2feef764715dc0e5ffea375979

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