Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e2cc15f5aa8d23…

MALICIOUS

PDF

48.0 KB Created: 2020-03-20 14:15:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6312de503cc07c8f4fb34ee2a6c90d3e SHA-1: 0404f2878b4147ff80c19c9c631a386ca6936c9c SHA-256: 14e2cc15f5aa8d23f008339192be39b0bf3bb60acafa1085cc3d69d243eee139
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which point to other PDF files, indicating a link farm or redirection strategy. The document body, though partially corrupted, contains a URL that appears to be a lure for a tutorial. The ML classifier strongly flagged this PDF as malicious, suggesting it's designed to redirect users to potentially harmful content or facilitate further infection. No scripts were extracted from this sample.

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://mrstruitt.com/uploads/1/3/0/4/130493714/130493714.html#tutorial+blender+2.78+espa%C3%B1ol
    • http://ddsbox.com/uploads/1/3/0/5/130588352/sevewulikaworebu.pdf
    • http://bakerlawga.com/uploads/1/3/0/6/130621579/11909b07b3f96.pdf
    • http://theshatteredcanvas.net/uploads/1/3/0/5/130543133/02d987.pdf
    • http://jeremyandkristina.com/uploads/1/3/0/5/130543289/vezasojebuxit.pdf
    • http://northeastwaterdamage.net/uploads/1/3/0/6/130620757/jiduzojutorab.pdf
    • http://natevehealth.com/uploads/1/3/0/6/130622101/2ad33b85b0212ef.pdf
    • http://paraglidinginkorea.com/uploads/1/3/0/7/130740207/6719316.pdf
    • http://preciouscrumbs.com/uploads/1/3/0/4/130483480/5165457.pdf
    • http://cameracrazyclub.com/uploads/1/3/0/6/130603773/fijewajoforarokot.pdf
    • http://nashvilleweaverwedding.com/uploads/1/3/0/5/130588841/radexedul_bofik.pdf
    • http://www.1stswagexperiment.com/uploads/1/3/0/5/130551467/nisazados.pdf
    • http://sheriahernphotography.com/uploads/1/3/0/2/130272886/kodiwisadow.pdf
    • http://comfortroundmattress.com/uploads/1/3/0/7/130775851/f1e35615eb2.pdf
    • http://askthetutor.ca/uploads/1/3/0/2/130289240/godinej-zizunex.pdf
    • http://4lifehealthwealth.com/uploads/1/3/0/6/130621205/98134d9db3ab7.pdf
    • http://jf1850.com/uploads/1/3/0/7/130739011/zotitu.pdf
    • http://shirokuroproductionsinc.com/uploads/1/3/0/4/130476574/lakimejuraweruw-xazatumi.pdf
    • http://www.caperecovery.com/uploads/1/3/0/5/130542781/418457.pdf
    • http://newcanaandems.org/uploads/1/3/0/6/130605393/zapopafedalu.pdf
    • http://nagira-casino.com/uploads/1/3/0/3/130379135/tulutamodejunu.pdf
    • http://dallenbachracing.com/uploads/1/3/0/7/130740512/tazavegitax.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000713d.bin
eb48ab57bcac4e0475a17732db119fd4592160e7d391b12ccd440fbc83a6a318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713D 8816 bytes
font_01_sfnt_off00009130.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9130 1708 bytes
font_02_sfnt_off00009997.bin
1d1fa5121415f8f5353993473374918b9d2a38f433752094af4cce5d3be72c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9997 16312 bytes

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