Malicious PDF — malware analysis report

Static analysis result for SHA-256 73bdca7226bfac3b…

MALICIOUS

PDF

73.4 KB Created: 2021-06-01 00:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 391778f2e841fb4c14afed8a7e65e3bc SHA-1: dd8fc5545a840c1d788a7f06795bd2fff79d34e8 SHA-256: 73bdca7226bfac3b733f7972d0b561a34d37019342bda9166bb838921b333758
124 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially corrupted, suggests a lure for a "Call of duty ghost cd key generator free download", aligning with phishing or scam tactics. The presence of external URIs, including one pointing to a raw IP address, further supports the malicious nature by indicating potential download or redirection points for further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://krisoc.ru/uplcv?utm_term=call+of+duty+ghost+cd+key+generator+free+download
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/a1c396c5f8b12e73836d5a43bb092aac/mumaxejarosesozided.pdf
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609653ae72ab5---lanaxikidifape.pdf
    • https://rybczewice.pl/userfiles/file/56723158052.pdf
    • http://ankurgroups.com/userfiles/file/89622811048.pdf
    • https://altonika.pro/files/fck/file/jegolewapebo.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16095d78f1d83c---57324521254.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609117eb71910---nimokunijajere.pdf
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609994f24ca9c---biberemosulepazelut.pdf
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/6f6b9fbd1652160dc63f4553f34517ee/zabat.pdf
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/420b75217e4fab71ca7d7f5f8d16a21c/xarisiruteberisegepepuna.pdf
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1466f2e5d---lexewoseb.pdf
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/c2608ef081c61ab24efd2393393b6f83/65887899994.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9fccb1364---zosezam.pdf
    • http://zonazero.es/userfiles/file/290955059.pdf
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0135ef9f8---pobisakewesozokimep.pdf
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160aac49c1cf4a---13531652761.pdf
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862fe6930d0---womizemupabejapaso.pdf
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/zibisobokusi.pdf
    • http://technoculture.cz/admin/upload/file/70053788008.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e1b0.bin
535567750d797b53e1f5f63559eef5519d71fbe4fe798cf7990ec182bc0501f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B0 5444 bytes
font_01_sfnt_off0000f44d.bin
275f4eee7db50e0feeb6c5288d6b450c55d443bf0f345536499a357045beddf0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF44D 10364 bytes