Malicious PDF — malware analysis report

Static analysis result for SHA-256 824cf3f3d49ae2ca…

MALICIOUS

PDF

241.9 KB Created: 2021-02-15 15:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7019bb1e600c9c5dc47b5d884f288145 SHA-1: d5abbebd47bb9cb820c5e983c1cec93994a553a2 SHA-256: 824cf3f3d49ae2cae84c0bc63af322854766522183bd8bf3ff8e2535ef938939
104 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, with heuristics indicating the presence of an external URI and an urgency lure. The embedded URL, https://leonvi.ru/123?utm_term=alan+watts+youtube+death, is the primary indicator of a potential phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and ML detection suggest it's designed to exploit vulnerabilities or trick the user into navigating to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/123?utm_term=alan+watts+youtube+death PDF link annotation
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/xomufogonubip_wevabo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5fdc196b10f5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449183/normal_5fdb8ce2ea54f.pdfIn PDF document text
    • https://nowatipuzovatob.weebly.com/uploads/1/3/5/3/135397830/rafalodolirexin_gowanuje_midafu_jamazozi.pdfIn PDF document text
    • https://wujibinofowe.weebly.com/uploads/1/3/1/3/131383737/6594513.pdfIn PDF document text
    • http://tesar-krd.ru/carnival_cruise_app5797u.pdfIn PDF document text
    • http://trenketo.buzz/814900290965qfad.pdfIn PDF document text
    • https://baziwiruxufuwav.weebly.com/uploads/1/3/1/4/131482892/6173664.pdfIn PDF document text
    • https://tetoxoji.weebly.com/uploads/1/3/0/9/130969306/fajup.pdfIn PDF document text
    • https://newekozowoni.weebly.com/uploads/1/3/0/7/130738578/2e4745b965ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://bujuxuvumelijet.epizy.com/overview_forensic_investigation_report_into_steinhoff.pdfIn PDF document text
    • http://rebokomixuxoj.epizy.com/full_bed_comforter_and_sheet_set.pdfIn PDF document text
    • http://mawafomixo.rf.gd/1293428076.pdfIn PDF document text
    • http://xoxitazowakovit.rf.gd/medical_microbiology_bacteriology.pdfIn PDF document text
    • http://berojopuzenon.rf.gd/totemigubakakamalatem.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off000388e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x388E1 28368 bytes
SHA-256: 119594ad2f23be1b59bf546728aa8c585879c4f36462cc89d5d2c9f310aaea73
font_00_sfnt_off00030a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A5C 11184 bytes
SHA-256: ef130b0b1b963feac8512fb8be50265bbc748feedb47a42dda035746a45dc9fb
font_01_sfnt_off00032ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EC7 5140 bytes
SHA-256: a637e7c161e2ace6952d077ece0b09bebe5b6d3bc0a5b8dd5ce314186e10e2f0
font_02_sfnt_off00034057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34057 11380 bytes
SHA-256: 2ffa0d7d0b4d7c92b8bc8d59e3612dde4c0073f05fe3fc69e0931e085a2115ba
font_03_sfnt_off0003592c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3592C 15396 bytes
SHA-256: c4483ef1c551f63ba7e4258693b921272ec7ecb51e41341762ca91f98b5870e4

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