Malicious PDF — malware analysis report

Static analysis result for SHA-256 34052058e7a13354…

MALICIOUS

PDF

81.7 KB Created: 2021-03-18 13:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ca4070cde8950bd8ed547e5c6d3b41a SHA-1: 34111973c5d36655cff750a11383285ec27a1a24 SHA-256: 34052058e7a1335404aaeb40c6de3a37a4d7b96223334d9e0800e69b4d9f0080
104 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains embedded URLs and a heuristic firing for a visual download button, suggesting a lure to trick users into downloading further malicious content. The presence of external URIs like 'https://midufefew.ru/aws?utm_term=stand+by+me+doraemon+2+full+movie+watch+online' further supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/aws?utm_term=stand+by+me+doraemon+2+full+movie+watch+online
    • https://cdn-cms.f-static.net/uploads/4451753/normal_603a5c671eb02.pdf
    • http://sutivebako.iblogger.org/pisanivekove.pdf
    • https://cdn-cms.f-static.net/uploads/4386829/normal_601822e4199ab.pdf
    • http://latitekiwa.scienceontheweb.net/cisco_access_point_configuration_step_by_step.pdf
    • https://cdn-cms.f-static.net/uploads/4491148/normal_5fd80a0f46c98.pdf
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd16ff273b65.pdf
    • http://palawawez.mypressonline.com/duxinamox.pdf
    • http://xisumagogali.getenjoyment.net/duruwubuxenagunes.pdf
    • https://static.s123-cdn-static.com/uploads/4455194/normal_5fe2f6d85d9e6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://neritadijim.rf.gd/hospital_waste_management_system.pdf
    • http://gikawulav.rf.gd/internal_combustion_engine_efficiency_formula.pdf
    • https://uploads.strikinglycdn.com/files/a4388ac5-03e9-40af-82be-c06843776b57/dafepi.pdf
    • https://s3.amazonaws.com/wanasuvedigo/54638931736.pdf
    • http://fawipiro.rf.gd/nanostation_m2_firmware_download.pdf
    • https://s3.amazonaws.com/fazujo/bbc_english_learning_software_free.pdf
    • https://uploads.strikinglycdn.com/files/9ad2da01-b9b7-4165-8f78-270bc1d8af3b/panitawedimobiv.pdf
    • https://uploads.strikinglycdn.com/files/7125cdec-e917-4655-afdf-9febf267fa96/27908396683.pdf
    • https://uploads.strikinglycdn.com/files/e9544281-1ab1-4634-ac27-05bd5ad70297/magew.pdf
    • http://sawesupunozigiv.atwebpages.com/79782062055.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_off0000fd9b.bin
9d504fb8c80181c9be994a17bde9844ff293483bd644aff97146e4cdbacc7800		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9B 5712 bytes
font_01_sfnt_off00011104.bin
18f83430878796819715e487c72205eb31546c2c10af749264a93e35c580afe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11104 11508 bytes

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