Malicious PDF — malware analysis report

Static analysis result for SHA-256 f360e52fa158f011…

MALICIOUS

PDF

78.6 KB Created: 2021-03-23 11:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 737c07a55a981b5d61063b68f1385f52 SHA-1: e31b05c5944d0db402a342fd0aa09c2eb56b55bb SHA-256: f360e52fa158f0118dbf26337d7af7fd3d8609f02883942d902c590375f56413
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URLs and document body suggest a phishing lure, specifically using a fake syllabus to entice users to download further malicious content. No scripts were extracted, but the PDF structure itself is indicative of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/award?keyword=upsc+ias+botany+syllabus+pdf
    • http://yyyyyyhhhhh.space/what_is_required_for_a_valid_deedji3oh.pdf
    • http://freshnatur.fun/921097521866p6uu.pdf
    • http://bigonetudukori.iblogger.org/lenerumalavupafo.pdf
    • https://wuwonemuv.weebly.com/uploads/1/3/4/5/134589345/6175321.pdf
    • https://static.s123-cdn-static.com/uploads/4409621/normal_6004735cb592d.pdf
    • https://podozipejubepa.weebly.com/uploads/1/3/4/8/134893890/xinuzobupirax.pdf
    • https://fejizokifod.weebly.com/uploads/1/3/5/3/135341395/938803.pdf
    • https://lixabepona.weebly.com/uploads/1/3/4/5/134530066/3641455.pdf
    • http://kosodidaxelo.22web.org/74240546646.pdf
    • https://static.s123-cdn-static.com/uploads/4474445/normal_5fe59282d5563.pdf
    • https://static.s123-cdn-static.com/uploads/4451229/normal_60029793ecf48.pdf
    • https://rorefogalo.weebly.com/uploads/1/3/0/7/130776605/divisover_kitede_jakevabopa_bijezav.pdf
    • http://papetus.iblogger.org/lugomekapisamidebokanabi.pdf
    • http://thecaffeinatedstudent.com/burutikubumirudofvslb3.pdf
    • https://static.s123-cdn-static.com/uploads/4416654/normal_5ff112320bc58.pdf
    • http://gladkoe-telo.xyz/zuvovodigimajiwoqz24h.pdf
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/4c206f8.pdf
    • https://zozolunefa.weebly.com/uploads/1/3/5/3/135325744/1964187.pdf
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/lefojuvamoti.pdf
    • http://losasawavezu.iblogger.org/78501654142.pdf
    • http://radanews.site/258572305520aooa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rubidolad.epizy.com/spring_framework_durgasoft.pdf
    • http://dozafuzap.epizy.com/pneumonia_adquirida_na_comunidade_guidelines.pdf
    • http://nemutevo.rf.gd/puranolatomewamixosi.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_off0000f6bb.bin
292c7bf6152293ba20b4a61a7f47b1ae5a82612a6a8e0a086a2e6564975875f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 5284 bytes
font_01_sfnt_off000108cf.bin
e015a636c6cec620f2c787c654f072cd5a56aeaaa17bfcca76730580f3e6b777
pdf-font-stream PDF embedded font (sfnt) at offset 0x108CF 10664 bytes