Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b3a98aa9b4ccf5…

MALICIOUS

PDF

69.9 KB Created: 2021-03-16 12:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b13876d59167b905ccae94d5d260edc3 SHA-1: b1ea08e035ac2295b537f175cd25c771ee16cabc SHA-256: 98b3a98aa9b4ccf580b89c9e41161e27ae74191cb3ae8cd21cc254ba04e39943
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a technical guide, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to lead the user to a malicious resource, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/wix?keyword=guide+wavelength+and+frequency+measurement
    • http://vudifabofugejij.medianewsonline.com/tegunigolobanaw.pdf
    • https://jenogadagebaz.weebly.com/uploads/1/3/4/5/134586404/balux_wunigakozumune_xifozola_lawirogutudomu.pdf
    • http://bnl-jobs.com/337665132206brkb.pdf
    • https://jovanifapekiba.weebly.com/uploads/1/3/0/7/130739678/gugevunej_fatosutapol_tesugalitizewom.pdf
    • https://purubagenipobeb.weebly.com/uploads/1/3/1/3/131398544/jomirabokif.pdf
    • http://kupiokno.su/71552241728c1ch1.pdf
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/rarasase.pdf
    • http://wuvejabamivul.iblogger.org/how_to_say_hello_to_long_lost_friend.pdf
    • http://kalusivo.22web.org/40781028239.pdf
    • http://werenntaq.online/jamaica_images_clip_art_christmassylb8.pdf
    • https://zuripiri.weebly.com/uploads/1/3/1/8/131856797/5211981.pdf
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/fadamu.pdf
    • http://info-pages.ru/xaxotunofexifelononoh74z2.pdf
    • http://devuweza.scienceontheweb.net/bpsc_2020_question_paper_download.pdf
    • http://tarezirok.mypressonline.com/fewikumulij.pdf
    • http://fanuvowebutil.22web.org/essa_laboratory_online_reports.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zeduxutebepirob.epizy.com/58507592783.pdf
    • http://povojenase.rf.gd/42914287547.pdf
    • http://jazosorolanik.rf.gd/56741600306.pdf
    • http://golofup.rf.gd/girlfriends_guide_to_divorce_soundtrack.pdf
    • http://xixonuw.rf.gd/2010_chevy_camaro_rs_motor_for_sale.pdf
    • http://vekejuf.atwebpages.com/factory_reset_compaq_presario_cq57_notebook_pc.pdf
    • http://gusufarafedi.epizy.com/99043735286.pdf
    • http://gitatujobewati.epizy.com/tipixobenevusobunato.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_off0000d2ea.bin
8ffdab2da9c2d74f9e63a65cfaba31f870a6de9ad56b7a5f31916fd03a707d27
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EA 5848 bytes
font_01_sfnt_off0000e6c6.bin
da433ac80c8856c5d19e1a79219806532a3e4e609e68912041f5bc54440f1183
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C6 10264 bytes