Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7e786a16bf0e80…

MALICIOUS

PDF

77.2 KB Created: 2021-07-04 06:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 241f3c8c178eaa6fdaef80a8bdf5efe5 SHA-1: 2a3c93ee92cf5ba83195b911cf12352814a05d0f SHA-256: 6e7e786a16bf0e80ce12f859d629f79bd186a2ce6da41ae40a618d1758d592cb
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it may lead to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://przedszkolenisko.pl/userfiles/file/xuwefiwadofaxi.pdf
    • https://kildevangen.dk/files/47628014453.pdf
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c17506d1ea3---xajurusebewesap.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/lowukotubix.pdf
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/4bk85fbfm4j9bipddto9j24be1/20498839777.pdf
    • http://unesco-mediain.cz/fckfiles/file/jamemifisepogik.pdf
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/g9jm883jb2bicksdftv521kp20/95586830636.pdf
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/cdb80269d603f6fb01b3d4e3ab89a337/funodegifud.pdf
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/2c5ec2a8984053338538715276ac5088/nokedipavu.pdf
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085029ce9315---54332224632.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/8175v25osa0820vmgfvajfg9vm/52362772975.pdf
    • http://npas.ru/pic/file/banisitugugimuvugezowot.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e926296b7a---marafuvumodefijufi.pdf
    • http://musikpark-live.de/userfiles/file/52760069630.pdf
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/ak78c47a1suft25vr68sl3taks/buxenerusamilavi.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/6bf8af3c0015b6b6b4579d94c06dc427/62279223071.pdf
    • https://educationindiajournal.org/ckfinder/userfiles/files/74452764604.pdf
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/jiruzegoganufo.pdf
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa6833819d---54940295324.pdf
    • https://anpheatingandac.com/nbloom/fckuploads/file/komibipegaxaliwokarewe.pdf
    • http://4grd.com/cmsimages/file/79228822862.pdf
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/4985b4266637b1e930581731579bd477/betodijavuduporaroratu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=3+letter+words+with+qi+in+them
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca5f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA5F 16792 bytes
font_01_sfnt_off0000e276.bin
0bbab10cbe40dd8fbce828e0d6b3cb945847dadd087ff64e0e62728e0e7317c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE276 10660 bytes
font_02_sfnt_off0000fa7b.bin
9c116efac55f0dcd32a23a555145d8864144b414a3ce8b74c1cc8847ec57e77f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7B 17408 bytes

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