Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7e805865e87fef…

MALICIOUS

PDF

62.4 KB Created: 2021-01-09 19:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 716a1794b588de2fdf2f87afea0f5836 SHA-1: 00a5a26b05b67c1dbdf743476bb84a83b90a3917 SHA-256: 5c7e805865e87fefa59e8325c8d007eb737f7b187486e5b7f88e8aa7bd1848c8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, trafftec.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=cultipacker+for+sale+michigan PDF link annotation
    • https://site-1174826.mozfiles.com/files/1174826/In PDF document text
    • https://cdn.sqhk.co/duditizonut/5NzPggt/smart_connector_keyboard_for_ipad_10._2.pdfIn PDF document text
    • https://cdn.sqhk.co/bakavaxa/YjeyYib/gemadomagiwadojafekonobex.pdfIn PDF document text
    • https://site-1168170.mozfiles.com/files/1168170/74720202440.pdfIn PDF document text
    • https://site-1172149.mozfiles.com/files/1172149/wudupejux.pdfIn PDF document text
    • https://site-1166752.mozfiles.com/files/1166752/electromagnetic_fields_textbook.pdfIn PDF document text
    • https://site-1175125.mozfiles.com/files/1175125/33804074546.pdfIn PDF document text
    • https://cdn.sqhk.co/vilomikov/guNjjgi/40496184104.pdfIn PDF document text
    • https://site-1184420.mozfiles.com/files/1184420/miwafa.pdfIn PDF document text
    • https://cdn.sqhk.co/lisutovudaf/A0figjh/dining_near_me_outdoor.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/tenunud/bible_for_laptop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/vejaw.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/bloodshed_dev_c_4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/cellulitis_guidelines_nice.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/cara_membuat_google_form.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_off0000b73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB73D 5400 bytes
SHA-256: b6d55bcfbdbc2db7cf84d126303b46830f7fff942f44f7db40a4bae8a579e3fb
font_01_sfnt_off0000c973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC973 10232 bytes
SHA-256: 3eb3700f51bf1966fa24b629a7763e2531632599a10c74234ce30a2031502545

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