Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb59c8a0ea0debb…

MALICIOUS

PDF

78.8 KB Created: 2021-01-05 06:58:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fc44e496b16458df0b26f97baf138779 SHA-1: 8a9d01cd6e49029422341100e8f06a1447eb837b SHA-256: eeb59c8a0ea0debb039c3f438c656513af21abd88ebb1e661928da062d162246
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL, https://traffset.ru/123?utm_term=simultaneous+equations+worksheet+kuta, which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to educational worksheets.

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://traffset.ru/123?utm_term=simultaneous+equations+worksheet+kuta PDF link annotation
    • https://cdn.sqhk.co/perigupa/Mhbgdml/redream_android_bios_location.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_5fd3504c56b15.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/fjfN2S3/34093373217.pdfIn PDF document text
    • https://riwobasafogad.weebly.com/uploads/1/3/3/9/133999818/gazobunabidatonixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417139/normal_5fb5753f1ddaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376101/normal_5fc39e90df00b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495985/normal_5fe5d4c99aeae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483083/normal_5ff2682c9919d.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/icCVc2M/snow_queen_trailer_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423772/normal_5f9f76a02039f.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/gofiguj/buxuzazadisanotaxemole.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/50063564425.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_off0000f58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58B 5308 bytes
SHA-256: 9bb20211d035602b68820168e50a105029db811643e4e6859b4a663f691b9cec
font_01_sfnt_off0001077b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077B 11528 bytes
SHA-256: a595ebab21c5280f84773fdc571d0b9ceaa261a7625fe3d6b4e4b76d4b0921f9