Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ced956aa9213a91…

MALICIOUS

PDF

70.1 KB Created: 2021-06-01 04:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035ef7b2fc74daa0beea7ce46e5cf10a SHA-1: 2d1394f91a8bf3046c41aeb6aa7a98fc8be08b73 SHA-256: 3ced956aa9213a91f1e333c55186ef612dba7d0b0802f5be57cda60d0200970b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious by ClamAV. The document body, though partially corrupted, suggests a lure related to appliance troubleshooting. The presence of multiple suspicious URLs indicates an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

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://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6a8f6570b---zosepu.pdf
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607d06cb9dfee---mesuku.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607289b540490---8245940295.pdf
    • https://codecs.roimages/file/kewafobinabokovopabinov.pdf
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/7a760c1689fcaa8e24092d955bc7c0a1/duvokela.pdf
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1608239c5165b4---17910493176.pdf
    • https://organicfertilizerproduction.com/d/files/fapegatiguburefisidudod.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb439b01a8---vimolebolefi.pdf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/4098fe5c27e381b9f4d1bf97de2c264a/majurotuvajifedulurazok.pdf
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/c216c126f1afc1ee3017e09d9d4e96b3/desuf.pdf
    • https://htchninc.com/d/files/zogulapisegufiroz.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/d25ba43a8ab1a27ff1ad48da2de52723/sunenetikesawewenugo.pdf
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/6d8c3f0c8eb348b475a73f2a03ba6e67/jitebukim.pdf
    • https://zahnersatz.pl/userfiles/files/59755968525.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086565948de0---760594961.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a25e64dd38---23169465703.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/b2cdd8226303d1b057a77c780bfead74/32211057583.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=why+is+my+kenmore+refrigerator+light+blinking
    • 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_off0000d504.bin
c5f5b756534a0724ef6e7d76a8c927f38e473ac65656736bb95a39bf8eba885d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD504 5500 bytes
font_01_sfnt_off0000e7a8.bin
351b961cf338942204ffd74128af8232f40f731b98843690e80fd2e392645c6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 10452 bytes

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