Malicious PDF — malware analysis report

Static analysis result for SHA-256 48330a81b2285847…

MALICIOUS

PDF

38.3 KB Created: 2020-03-30 04:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d7a92424dad8d56c5b384bc2cefbde19 SHA-1: 748d638fb5ea84867012c2129a5162bdc7d204e9 SHA-256: 48330a81b2285847e607f89a3241b7db611fffb1c583eb7ff9ff39b5936fc760
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted across numerous domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to direct users to potentially harmful resources.

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://ne-surgerycenter.net/uploads/1/3/0/6/130605230/130605230.html#ensayo+en+contra+del+maltrato+animal
    • http://ohiomsc.com/uploads/1/3/0/6/130621030/suxirimiwali.pdf
    • http://mx.plumasfiresafe.org/uploads/1/3/0/7/130775413/80a45c5b53.pdf
    • http://forgefactorygym.com/uploads/1/3/0/9/130969340/gamujidukek.pdf
    • http://brndpix.com/uploads/1/3/0/6/130620811/aaea2302d.pdf
    • http://gokartkings.com/uploads/1/3/0/4/130489386/muwozekuwa_tizaraka_paranogenujizef.pdf
    • http://viktorzemlicka.info/uploads/1/3/0/2/130272603/c0a5e5abdce3862.pdf
    • http://fitness-eibiswald.com/uploads/1/3/0/8/130873942/vabogoduj-fanamuked.pdf
    • http://healinspireconnect.com/uploads/1/3/0/5/130589285/fufivewifejakuka.pdf
    • http://minedearth.com/uploads/1/3/0/4/130483248/vasos-nujetazerep-zevunibixolo.pdf
    • http://coachingunited.de/uploads/1/3/0/4/130435637/venij.pdf
    • http://beasleyhomes.com/uploads/1/3/0/7/130739806/tobugoraparavem_vajopazif_xefumetodalu_nabufunududatil.pdf
    • http://helicoreservices.com/uploads/1/3/0/5/130550974/966400.pdf
    • http://davescustom.info/uploads/1/3/0/4/130436058/tisebejizexuwonoj.pdf
    • http://closeupcapturephotography.com/uploads/1/3/0/7/130775700/b168e916931fd1.pdf
    • http://taysidegrooming.com/uploads/1/3/0/6/130639815/b3d5da1329c930.pdf
    • http://solidinvestigations.net/uploads/1/3/0/6/130620520/6672779.pdf
    • http://tamagibb.com/uploads/1/3/0/5/130551126/2223699a9a49c.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de9.bin
f9e20e25326cc6e718987a221d604f0b6915f5721193ad5efb0d9d6b5ae184ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE9 8228 bytes

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