Malicious PDF — malware analysis report

Static analysis result for SHA-256 c34b2c092352aee5…

MALICIOUS

PDF

77.9 KB Created: 2021-04-28 10:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c666ceb3b290098fd102792993333cf SHA-1: 34414e40fd8d10ed77b15b81cd0a195fc81db467 SHA-256: c34b2c092352aee5405ade8d5343ded5efd95ddcfb7f1db3e62c26854e4e2504
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to suspicious PDF files hosted on compromised websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest it's designed to trick users into downloading further malicious content.

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 http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2d5fb32b9---difumikawakavusot.pdf
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/2045168c9c2f0ab4ef13f67d0b83560c/62613492613.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160836cb9f2af1---tonexodix.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ced9742f51---39102720601.pdf
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/a5ae84b9287f3451e0ff21b3c09fd5f1/newig.pdf
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/f309c46c414f6132e7489137ecbdd9ff/19170670396.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/kuf7utii0k6bj8hlc55kockif1/bidakajalefogota.pdf
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16080ae9e46d43---54894898042.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/bj4evjc1nv90fqj8f4128ma1b0/neribusuturatesapit.pdf
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6610c4bd6---jukixelokarom.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800fea4a0b4---15102553022.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/i8u76cvm943h2ct8icdsi15ca5/xasiwaloba.pdf
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/21d5unnt989r62d765jtu7dme4/88860322337.pdf
    • https://aedwea.com/upload/foto/vigonidiresaz.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de398ec783---6365293435.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1606edf6539e67---31013146885.pdf
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/4366tel5t58rhu5jc70rr03s7l/ketusinolapatakenube.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=tamil+action+movies+2018
    • 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_off0000f52d.bin
ef2a2eba40e6233579c2cca66c0777c4dc47958923b85cfebed3885b13b82a47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF52D 5380 bytes
font_01_sfnt_off00010772.bin
332a38dedb46c9a66226df105f4833cd553f839b026ff8123c7274f7b4ab3981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10772 10536 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.