Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ace269b69bb981a…

MALICIOUS

PDF

182.5 KB Created: 2021-03-31 19:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 939cbe195ef15eef502fdabfbe345181 SHA-1: 7fe6564ff903199a064d3ed965d13ffb124acf0b SHA-256: 7ace269b69bb981a5458a4af1913f711f903aec4351c55cfe85d11494b178280
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a thermostat manual, likely intended to trick the user into visiting a malicious site. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of multiple external URLs suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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/wix?keyword=braeburn+wifi+thermostat+manual
    • http://subuxiwubemew.getenjoyment.net/lozabupigepuxitibemu.pdf
    • https://fisupipegapug.weebly.com/uploads/1/3/4/5/134515512/duwixowoz_japimepanej_levakagedeg.pdf
    • http://zovitidagawas.sportsontheweb.net/degexezubobesavol.pdf
    • http://pozijuza.scienceontheweb.net/98569153307.pdf
    • http://tipofeliluget.medianewsonline.com/telezugabelasokotesuz.pdf
    • https://reboxulowewo.weebly.com/uploads/1/3/1/4/131407709/godawulezenukumel.pdf
    • http://devubowoku.mypressonline.com/19992004262.pdf
    • https://pamaxorakumi.weebly.com/uploads/1/3/4/0/134019068/katewizuzorimuz_bujuxutudilo_ninigofenufu_xovem.pdf
    • http://bupomorefa.22web.org/80659671205.pdf
    • https://cdn.sqhk.co/sobexofap/hichijj/dragon_raja_pc_without_emulator.pdf
    • https://cdn.sqhk.co/tesadubozino/MhjjaRG/aces_of_the_luftwaffe_switch_test.pdf
    • https://cdn.sqhk.co/vovidonob/0dpEM5t/51670606776.pdf
    • http://mapotilij.mygamesonline.org/aaos_knee_strengthening.pdf
    • https://cdn.sqhk.co/xovepejegosi/2cligib/jusojadedeminitafadik.pdf
    • http://xujukalol.iblogger.org/the_adventures_of_huckleberry_finn_study_guide_answers.pdf
    • https://newabezuvusadak.weebly.com/uploads/1/3/5/3/135347141/zolojigiz.pdf
    • http://doxalasi.mywebcommunity.org/marketing_public_relations_giannini.pdf
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/lupero-vijazawi-tolopalubidu-poperuxapugap.pdf
    • https://cdn.sqhk.co/balaragu/jijaWij/road_traffic_signs_in_uganda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://livixutufedesuv.epizy.com/fenaba.pdf
    • http://tuwutexo.onlinewebshop.net/divadasaf.pdf
    • http://bizifopijosegu.epizy.com/81754418592.pdf
    • http://tulezij.rf.gd/97654512772.pdf
    • http://sugosabogakeg.rf.gd/83781941547.pdf
    • http://zarevamemamafo.rf.gd/sheet_metal_guillotine_for_sale_qld.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027be8.bin
e8997acf8d896d85e5b3a81d59ab37f1968f31a780c4cfe45cf4021137b2ae64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BE8 5172 bytes
font_01_sfnt_off00028d58.bin
f0e9300db965cc2111fbe173943e2b99ce1beeb0d8a24054b2b58493ad1ea581		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28D58 15088 bytes
font_02_sfnt_off0002bb1e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB1E 4324 bytes

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