Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4209959750a1af…

MALICIOUS

PDF

40.2 KB Created: 2020-03-28 06:20:27 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aff44d45e6dd9a1c49b9ad3d4870e2d0 SHA-1: 177b6a03bb0b1108f7b8d758df15151cd32f39c0 SHA-256: ab4209959750a1af4557f3ee45dac905cbe674254cf29451ed0b2d714f43fe2b
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to 'Plantilla mapa mental gratis' and mentions wkhtmltopdf, suggesting a lure for free templates. The primary attack pattern involves directing users to a vast array of external PDF files hosted on numerous domains, likely for SEO spam or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://kellylynnfitness.com/uploads/1/3/0/2/130289319/130289319.html#plantilla+mapa+mental+gratis
    • http://msirvingsclass.com/uploads/1/3/0/6/130639535/xinukezokewizik.pdf
    • http://alexanderlogistics.com/uploads/1/3/0/8/130813755/561332.pdf
    • http://hostmaster.fuchs-uhr.de/uploads/1/3/0/6/130621443/8fb943179e7.pdf
    • http://karamarie.org/uploads/1/3/0/4/130491166/2090288.pdf
    • http://greenicfdistributors.com/uploads/1/3/0/6/130639037/fabonekixa_fuzosabix_gisibosazad_vekumava.pdf
    • http://cleanerscom.com/uploads/1/3/0/5/130588913/sanexugelavudafe.pdf
    • http://glittergirlcustoms.com/uploads/1/3/0/2/130270808/xekuposo-vojozatoxabupu.pdf
    • http://hostmaster.martinafroehlich.at/uploads/1/3/0/6/130620985/8eab5ef151.pdf
    • http://uibds.org/uploads/1/3/0/7/130776299/5207082.pdf
    • http://hughescarpentrybuilding.trustabiz.com/uploads/1/3/0/8/130874608/6916600.pdf
    • http://www.labelchange.com/uploads/1/3/0/8/130874601/tutazixo.pdf
    • http://suetonius.com/uploads/1/3/0/4/130476976/7295327.pdf
    • http://www.galleryatmidtown.org/uploads/1/3/0/6/130604859/2919281.pdf
    • http://bikseriet.com/uploads/1/3/0/2/130289296/eb4f984251093c7.pdf
    • http://mommyplayzone.com/uploads/1/3/0/4/130435914/lasefawepuzuwote.pdf
    • http://michiganreflexology.com/uploads/1/3/0/7/130775826/vavebizal-pojokajuvapid.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_off000072ea.bin
b8413050b807ad4db0825c1f22e794fc6e27c3803e99a572425884d994ec0e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 9128 bytes

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