Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde8ee1ee08e4a71…

MALICIOUS

PDF

42.2 KB Created: 2020-03-23 04:20:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f84c0dab30bdafb64b0ce8257e63a035 SHA-1: 76fbd34f1b7ff25dd818631bdbd761206aeb54fb SHA-256: fde8ee1ee08e4a7197519d271341d1e80b8f0309c9726c95dcb6ba0d63c92b2c
94 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 point to other PDF files hosted on various domains. The document body text, though partially corrupted, suggests a lure related to 'Constitucion de 1812 numero de articulos'. The ML classifier strongly indicated maliciousness. The primary attack pattern involves a link farm designed to redirect users to potentially malicious content hosted on numerous domains.

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://iweargreatness.com/uploads/1/3/0/6/130604699/130604699.html#constitucion+de+1812+numero+de+articulos
    • http://exchange.aexist.nl/uploads/1/3/0/4/130476006/ribak.pdf
    • http://aspenfamilymedicine.com/uploads/1/3/0/5/130551477/pixezivitusafora.pdf
    • http://indonesiantrekking.com/uploads/1/3/0/8/130813648/reguvetafujaxinap.pdf
    • http://sniacare.com/uploads/1/3/0/8/130874393/nikiwanir-fafoteme.pdf
    • http://southernconcreteandshellllc.com/uploads/1/3/0/5/130551294/fukulelokobiw.pdf
    • http://www.lauriceimani.com/uploads/1/3/0/7/130776334/gaxijasidubivijuwuzo.pdf
    • http://traceysjewels.com/uploads/1/3/0/7/130740138/bafifisoraturen-tepikobo-fexeri.pdf
    • http://www.timezone-cbd.com/uploads/1/3/0/6/130639546/19157.pdf
    • http://www.northernbeacheshousewash.com/uploads/1/3/0/7/130738824/1877575.pdf
    • http://www.fabcraftinc.com/uploads/1/3/0/2/130272094/1667249.pdf
    • http://iamgabalicious.com/uploads/1/3/0/6/130639456/kevofisila_vizusiju_gisixiz.pdf
    • http://aastollplumbing.com/uploads/1/3/0/6/130622080/3c1046.pdf
    • http://www.10-4inspection.com/uploads/1/3/0/3/130323892/e0eb56.pdf
    • http://therenovationguys.net/uploads/1/3/0/5/130589251/vajuvexatavipap-kirago-raxadaribi-tulix.pdf
    • http://wyattcarmichael.com/uploads/1/3/0/6/130603985/12b024eb4854.pdf
    • http://reactivewy.com/uploads/1/3/0/6/130640019/pisememipisiba.pdf
    • http://alive-tattoo.com/uploads/1/3/0/4/130489240/3990717.pdf
    • http://www.ngsprephoops.com/uploads/1/3/0/3/130313343/987cdde697.pdf
    • http://matrixrocks.com/uploads/1/3/0/9/130969306/tepineb-xumepijeribav.pdf
    • http://www.the-crafty-sagittarius.com/uploads/1/3/0/4/130483836/8145563.pdf
    • http://tintmanstinting.com/uploads/1/3/0/2/130272426/5544017.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_off000079b4.bin
0bbfc3b1f30cd1bb03c66235b66af25548f24c4b2c129adbd32d1b2d5b1ce37f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B4 8832 bytes

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