Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74d5525372a3f59…

MALICIOUS

PDF

61.9 KB Created: 2021-02-06 21:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 566e29e2299d542a85fa64984f8cd6f4 SHA-1: ec3e7dee515027e9fbda4d88014535b477268756 SHA-256: b74d5525372a3f59f2073cebc50ed60045ba54d224ad02180d077758facc0e02
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, and contains numerous embedded URLs pointing to potentially malicious PDF files. The presence of external URIs suggests an attempt to redirect the user to malicious content, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Sujets brevet 2019 pdf', indicating a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/aws?utm_term=sujets+brevet+2019+pdf PDF link annotation
    • http://alania365.ru/vupakusesinikividuvinakuqzn0g.pdfIn PDF document text
    • http://raicen.com/36288714324rkm3w.pdfIn PDF document text
    • https://fubalaxusagipun.weebly.com/uploads/1/3/4/1/134108832/wujapubad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455399/normal_6010e2320a168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_601dd74e5c999.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/gggjjjX/swathi_dixit_born.pdfIn PDF document text
    • https://tevoletefe.weebly.com/uploads/1/3/1/6/131606261/9959561.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/ihhio0D/suntze_art_of_war_narration_approach.pdfIn PDF document text
    • https://cdn.sqhk.co/kotoweraga/hcZTYhh/best_sticker_maker_for_whatsapp_iphone.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/2005161.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB501 5656 bytes
SHA-256: dbbcdaa96c79da8570ecec3351479e6a6b50cfb508e66f1ae16223044cf3bc35
font_01_sfnt_off0000c855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC855 10768 bytes
SHA-256: 75a9235026f9e723483b9c2971a88215b4fdeece347c9649c28ce98a67fe6376

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