Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ef859677e9dffb…

MALICIOUS

PDF

75.1 KB Created: 2021-05-05 20:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5773c376bf912e19216fdffe22c814aa SHA-1: b69bc84ed301a70c6496b880f1aa8deade5e0252 SHA-256: f8ef859677e9dffb4739d1bbc5a72ae981cbcfe83a03b9ced30feba6fa93c46f
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'xezojetit.ru', which is likely used to host malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to 'figurative language in the great gatsby', indicating a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://xezojetit.ru/strik?utm_term=what+are+some+examples+of+figurative+language+in+the+great+gatsby
    • https://static.s123-cdn-static.com/uploads/4393776/normal_5fe0eff07244d.pdf
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5ff5d3c4bac17.pdf
    • https://cdn-cms.f-static.net/uploads/4486748/normal_6017bb76a6f8f.pdf
    • https://cdn-cms.f-static.net/uploads/4492555/normal_6068b7c1c7f40.pdf
    • http://ragexerate.22web.org/doing_business_report_2019_australia.pdf
    • https://static.s123-cdn-static.com/uploads/4475375/normal_5fec8eb291d32.pdf
    • https://cdn-cms.f-static.net/uploads/4381102/normal_5fdacf6deeaf8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://muxobuduxude.epizy.com/tepebu.pdf
    • https://s3.amazonaws.com/kodipopujufipig/url_http_archive._org_juggerrepo.pdf
    • https://s3.amazonaws.com/samopakamefap/mimogenasexesewen.pdf
    • http://relizaki.epizy.com/steinberg_cubase_5_full_crack.pdf
    • https://s3.amazonaws.com/paxivogedewilu/tanatologia_duelo.pdf
    • https://s3.amazonaws.com/lomogas/historia_del_calendario_gregoriano_y_juliano.pdf
    • http://kijijaxozaro.epizy.com/how_to_test_for_sleep_apnea_with_apple_watch.pdf
    • https://s3.amazonaws.com/vudivuzakal/how_to_help_a_child_with_sensory_processing_disorder_at_home.pdf
    • https://s3.amazonaws.com/loxopudizus/the_spectacular_now_netflix_trailer.pdf
    • http://xoxexanizeb.epizy.com/80399854429.pdf
    • https://s3.amazonaws.com/xoferuzu/34484446728.pdf
    • http://pifamodaz.rf.gd/60680760565.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7f6.bin
524f629b3fbd8e55e262e79a2de00ba6a86c84ab9dc6a548812f1d21e4801a32
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F6 5696 bytes
font_01_sfnt_off0000fb48.bin
f6c5b7b4459386f41a57c01220e1d5786109bb4a479ec5f6e81fbdb013ded8c2
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB48 10452 bytes