Malicious PDF — malware analysis report

Static analysis result for SHA-256 425b29532fe08599…

MALICIOUS

PDF

76.0 KB Created: 2021-02-15 10:59:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d0966cdd4e2c493c722b2c97fe7c863 SHA-1: db6023c56a939aa18e45e0b9447212887bd27fe7 SHA-256: 425b29532fe085999e2052dc40d096c758a9f472287d9a148a9db48bce6925b0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious URL, 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 malicious content, potentially masquerading as a legitimate download.

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://crophysi.ru/wix?keyword=java+concepts+early+objects+8th+edition+pdf+download
    • https://static.s123-cdn-static.com/uploads/4406191/normal_5fe4c6791cdc7.pdf
    • https://kiniwotonupit.weebly.com/uploads/1/3/0/7/130776343/930ab0.pdf
    • https://ninuwekij.weebly.com/uploads/1/3/4/6/134625354/wegolovujituwugu.pdf
    • https://tuxemadoja.weebly.com/uploads/1/3/2/7/132712185/5244209b29b0.pdf
    • https://static.s123-cdn-static.com/uploads/4493578/normal_5fc607a9bd97a.pdf
    • https://cdn-cms.f-static.net/uploads/4366973/normal_602875e0192c2.pdf
    • https://redelonoxoti.weebly.com/uploads/1/3/1/6/131606094/ponibez-vevowupevivit-nikoloni-pazejam.pdf
    • https://mubafuzolifuben.weebly.com/uploads/1/3/4/6/134644730/fafowex_pipod.pdf
    • https://kezunegewekal.weebly.com/uploads/1/3/1/4/131483031/kusus_dudagivowala.pdf
    • https://cdn.sqhk.co/sirepajaku/dicwgha/mino_monsters_2_evolution_not_working.pdf
    • https://cdn.sqhk.co/mujawiru/bUfdeii/grade_2_math_games_fractions.pdf
    • https://cdn.sqhk.co/lexebogefaj/cgfvGjj/97648337299.pdf
    • https://cdn.sqhk.co/ropesuzuruf/geghgje/56921824712.pdf
    • http://wifejopoxakobo.iblogger.org/yuumi_guide_to_meditation.pdf
    • https://lekemevegov.weebly.com/uploads/1/3/1/4/131410090/0794c.pdf
    • https://cdn-cms.f-static.net/uploads/4412382/normal_5fd1e7789c0da.pdf
    • https://cdn-cms.f-static.net/uploads/4417523/normal_60164d30db134.pdf
    • https://nolipugi.weebly.com/uploads/1/3/4/6/134652161/dakaloloki_zomiba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zowibatev/registered_dietitian_exam_study_guide.pdf
    • https://s3.amazonaws.com/jivuxo/assassin_s_creed_2_ost_rar.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_off0000eac8.bin
41ba7331b5d0a1438ca3b994899eb71bbdd7ad15070b7467b3fa9661a063d5af
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC8 5896 bytes
font_01_sfnt_off0000feed.bin
1e5c02eedf059d1772c0934b98d223c32bf1cf6a979e41620e8f184a3914cf57
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEED 10288 bytes