Malicious PDF — malware analysis report

Static analysis result for SHA-256 459c0257f2bc355d…

MALICIOUS

PDF

76.1 KB Created: 2021-01-17 15:52:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0eecd41af37ed596126461a668cad241 SHA-1: ebde74ca7685bf4d5028dbe3ca680683fca4b953 SHA-256: 459c0257f2bc355dc55391519a9d57e36717eb197288b2b9ac56097a4688a7d0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL points to a suspicious domain, likely serving a malicious payload or redirecting to a phishing page. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through a deceptive document.

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://traffset.ru/aws?utm_term=oxford+english+grammar+course+intermediate+answer+key PDF link annotation
    • https://site-1167941.mozfiles.com/files/1167941/emergency_alerts_android_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f87325e438d8.pdfIn PDF document text
    • https://cdn.sqhk.co/dinewemilo/gdHKxhi/rapajarajiwafulobakaf.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/iaGhfhh/gojezizavofi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5f8eb8b355561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f8fb13c34060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390637/normal_5fd78d7ddf21a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451210/normal_5fded8b92c3bd.pdfIn PDF document text
    • https://site-1171887.mozfiles.com/files/1171887/road_racing_wheels_size.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_5f8c5229bd965.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455639/normal_5fc4b031c5a9a.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/CZgcijl/99223932007.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471099/normal_5ff3ade418dc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427282/normal_60041e2b245cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382187/normal_5f8e00b60b2c7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/posufij/pegimifatubij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBB 5668 bytes
SHA-256: 582ba1765e479954f14b86eae7566f7df7cea826fd3b66f8ad38e9fcaf810c9a
font_01_sfnt_off0000eff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF9 10856 bytes
SHA-256: 521299e502bc29a7570365c971b3aad175b132395382cc98aa944d243c5cfe9c
font_02_sfnt_off000114cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114CC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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