Malicious PDF — malware analysis report

Static analysis result for SHA-256 2738dcf220f9d7d1…

MALICIOUS

PDF

77.4 KB Created: 2021-03-27 11:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9280940d525bead06ee0ac63f8435afa SHA-1: 693b32c1726f10a7ccd981042282c1c1daa4139c SHA-256: 2738dcf220f9d7d1de6bd6925f12adf107c8bc33074f54f6f48fad568201948b
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/wix?keyword=accounting+degree+worksheet+gonzaga
    • http://goproonly.com/majigejuzagejukxd2cs.pdf
    • https://cdn-cms.f-static.net/uploads/4469633/normal_601daafc01eb8.pdf
    • http://buyervannakupitvsem.xyz/batawuwejidinite739em.pdf
    • https://cdn-cms.f-static.net/uploads/4477892/normal_60465e9f98c9e.pdf
    • http://sarhello.online/blender_tutorial_modelingyi87p.pdf
    • https://cdn-cms.f-static.net/uploads/4479684/normal_6035fbd2b950c.pdf
    • http://shimano-stradic.ru/24797621993fqhpe.pdf
    • https://cdn-cms.f-static.net/uploads/4473919/normal_604826522537f.pdf
    • http://tacfitproducts.com/autocad_download_studentiym35u.pdf
    • https://static.s123-cdn-static.com/uploads/4467577/normal_6002e25add96c.pdf
    • https://cdn-cms.f-static.net/uploads/4402280/normal_604376c812452.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8890a5e7-5a05-45f2-ae71-5cd904df9516/javeruwefamo.pdf
    • https://s3.amazonaws.com/viwoxuz/best_poetry_books_of_2020_new_discoveries_and_final_gifts.pdf
    • http://mevedodaxaj.epizy.com/86307791134.pdf
    • https://uploads.strikinglycdn.com/files/954bbf3e-78be-46cb-bcd6-ecc1ffe1c2f9/kilubovotefop.pdf
    • https://s3.amazonaws.com/vebisop/13985479382.pdf
    • https://s3.amazonaws.com/lurutopobi/flushed_away_full_hd_movie.pdf
    • http://muriratutujifor.rf.gd/jexuxagofu.pdf
    • http://womopemi.epizy.com/railway_stenographer_syllabus_2014.pdf
    • https://s3.amazonaws.com/rezugekolaba/manualidades_con_papel_para_dia_de_muertos.pdf
    • https://uploads.strikinglycdn.com/files/cbf23ec0-1a62-4a92-a279-dcf0d7e4b59f/bafalilodenatez.pdf
    • https://uploads.strikinglycdn.com/files/db917336-181f-4f43-8005-dc1ad11b1d7f/45358070996.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0ea.bin
3e20288ef1beeb16e6fd857ed56865ef333633919f1eae925e6ad5d2f86d6c49
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EA 5364 bytes
font_01_sfnt_off0001033f.bin
c7eb3849d8fbee9fbc4ee54f1ecb2720e23ffb40e34d1949cb42f9964df2efa1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1033F 10832 bytes