Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3fb6285c340f85…

MALICIOUS

PDF

69.2 KB Created: 2021-03-27 17:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c2f3297743ea51ade0423ebe44261998 SHA-1: 8b1ba4635f46b11438706acf84408e494d7a8a03 SHA-256: cc3fb6285c340f85b71d9dce50d29c246b54082d4ba2d1abe2631e6d02cfe942
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'jottigo.ru' suggests the document is designed to redirect users to a potentially harmful site. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to facilitate malicious redirects or exploit vulnerabilities.

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://jottigo.ru/wix?keyword=tocineta+de+pavo PDF link annotation
    • http://lakenamazaga.iblogger.org/ridgid_10_dual_bevel_sliding_compound_miter_saw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454550/normal_5fc6c75ea3b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369912/normal_602381a60eb58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459319/normal_6020018473413.pdfIn PDF document text
    • https://cdn.sqhk.co/livaxipovage/ZTjfQsg/33121235307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421213/normal_6039c70019d7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502464/normal_60004195acdf4.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/ifgeJid/onelogin_protect_app_setup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/the_hobbit_book_original_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1386846c-6fd0-4eb9-b093-774b342d4797/nezinekasegezigaka.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/48050555950.pdfIn PDF document text
    • http://kititone.epizy.com/2198847804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2344c304-44a7-412c-8bfc-e2d27e206fdf/penesi.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/67691640569.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/vectors_ap_calculus_bc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/904be2e0-818a-412a-b178-88476e991278/keredasiruripofiti.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/43999515807.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/56146199695.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD10 4768 bytes
SHA-256: baab7c9b37770120fba78e4f3a895736b1840586225a22cfd86fb3912134ff4a
font_01_sfnt_off0000dd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD65 12580 bytes
SHA-256: ca4e2dd6315af5af025752e0553aec467e5c13f4d5837146dc661bff45986bff

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