Malicious PDF — malware analysis report

Static analysis result for SHA-256 b77746ba43385ed1…

MALICIOUS

PDF

51.7 KB Created: 2021-03-27 16:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 877ada6c84a78bcb4632f9eb30b1ccc8 SHA-1: 44d79b8a8b447efb737058531c6c9f2b45f18d2f SHA-256: b77746ba43385ed1fad047f590ae2e5f55a873767f360f08a628252fbf5291bf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7468

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://crophysi.ru/award?keyword=adobe+acrobat+pdf+editor+pro PDF link annotation
    • https://jukorupojos.weebly.com/uploads/1/3/5/3/135344641/af1343.pdfIn PDF document text
    • https://cdn.sqhk.co/nalogigoke/iMgjict/vonoku.pdfIn PDF document text
    • https://cdn.sqhk.co/tibatojo/hh7Iiew/7189956531.pdfIn PDF document text
    • http://japisonaxem.22web.org/chocolate_factory_full_movie_480p.pdfIn PDF document text
    • https://niraniki.weebly.com/uploads/1/3/4/6/134662237/7933470.pdfIn PDF document text
    • https://vokinojen.weebly.com/uploads/1/3/4/8/134851280/kurofidopiwewi.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/b9ijZhb/71418540600.pdfIn PDF document text
    • https://sitekitenuzuvi.weebly.com/uploads/1/3/2/3/132303150/77f8642e87c.pdfIn PDF document text
    • http://tafuvomilo.22web.org/how_to_test_cable_continuity_without_multimeter.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/45822736742.pdfIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_880fac1b9b4e4b98a643405ac5929f58.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/24372992101.pdfIn PDF document text
    • http://xepododulujex.epizy.com/98588110451.pdfIn PDF document text
    • https://97783159-ced7-426e-9fbd-60d2bb3342fb.filesusr.com/ugd/00058f_4f3e190c099948e089b3fd4e79f452f8.pdf?index=trueIn PDF document text
    • https://f1e11ea9-a931-46ad-af30-391325c877dd.filesusr.com/ugd/423518_2c7781302bc040299a5a730ccd7a2c8f.pdf?index=trueIn PDF document text
    • http://kixomeremit.epizy.com/21760550371.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/binomial_probability_examples_with_answers.pdfIn PDF document text
    • http://jeximejepexifog.epizy.com/84330612965.pdfIn PDF document text
    • https://e2a3f85e-3ce8-4c76-99a2-e63219cad5ad.filesusr.com/ugd/473d25_28bcf1cac23f45e49783be14ae166fb4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/how_to_make_simple_pizza_dough_without_yeast_or_baking_powder.pdfIn PDF document text
    • http://desasodeta.epizy.com/gidaditaredudevunodo.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/happy_birthday_cards_images.pdfIn PDF document text

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