Malicious PDF — malware analysis report

Static analysis result for SHA-256 1381576112e5494e…

MALICIOUS

PDF

18.6 KB Created: 2020-03-08 07:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d2d19fb2b30a761b1aa120aaece2ee56 SHA-1: 76c96a92c184c804f26e7e8f0f04ade7be83bc6d SHA-256: 1381576112e5494e94ec22c6e81ab111980f62a9a96ecba7a90b400ca4dc0bfe
114 Risk Score

Malware Insights

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

The PDF file is designed as a lure, presenting itself as an image-based document with a clickable action. This action redirects the user to a URL that hosts a large collection of other PDF files, suggesting a link farm or a method to distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 18 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://walkwithcrystal.com/uploads/1/3/0/3/130313513/130313513.html#what+are+the+biotic+and+abiotic+factors+coral+reefs
    • http://blog.lifesmysticaljourney.com/uploads/1/3/0/6/130604388/wusigelofug-fapokerezijevu-matis.pdf
    • http://www.shop.keravita.ch/uploads/1/3/0/3/130379252/563360c2dcac.pdf
    • http://www.elisabettagamboni.com/uploads/1/3/0/6/130621071/1950478.pdf
    • http://mta-sts.mail.lisa-stanley.com/uploads/1/3/0/2/130273624/karoki.pdf
    • http://www.alaskaflightseeing.org/uploads/1/3/0/4/130489358/f193da118b0.pdf
    • http://t24player.live/uploads/1/3/0/5/130589114/patufidur_tiforawomajuzot_nuxanavazarep_zipaxonowoxodu.pdf
    • http://innovatorsunion.com/uploads/1/3/0/9/130969801/ac347ea9.pdf
    • http://shangrila.com/uploads/1/3/0/4/130490053/sajikuvebew_zidozulawokulok_zazisiwavex.pdf
    • http://millsacthelp.com/uploads/1/3/0/5/130545334/jirokotepawagirojaz.pdf
    • http://kulturperlen-salling.dk/uploads/1/3/0/7/130739340/345158.pdf
    • http://signalhill.com.au/uploads/1/3/0/3/130379415/4888632.pdf
    • http://beatinghearthealth.com/uploads/1/3/0/6/130639956/6827985.pdf
    • http://thatbluetub.com/uploads/1/3/0/6/130604348/devemi.pdf
    • http://www.lacreativity.com/uploads/1/3/0/4/130494743/dugegujif_rejunodapirajo.pdf
    • http://coedcademy.com/uploads/1/3/0/4/130476572/fc2ba8ca.pdf
    • http://www.evelynhsullivanmediation.com/uploads/1/3/0/7/130740189/govejebamakuti.pdf
    • http://adgermanwarehouse.com/uploads/1/3/0/6/130621909/buferovutirej.pdf
    • http://jfainnovative.com/uploads/1/3/0/3/130313224/suzabizekax_xafizub_pabusi_xawomo.pdf
    • http://www.1405lowerferry.cassidyturleysites.com/uploads/1/3/0/8/130874046/7394471.pdf
    • http://naturesgiftsessential

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