Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02fb9a6f8ea4951…

MALICIOUS

PDF

78.3 KB Created: 2021-03-12 05:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ec9def2aa5abf6fda91cfb991981b6b7 SHA-1: b41b0c6fc85647db26e0a4622ff79d8aaa9de443 SHA-256: f02fb9a6f8ea4951b1f491c266ff85a0ec6a88ebb83ace068732476b9d569f9e
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, suggests a lure related to 'bpel interview questions and answers pdf'. The presence of multiple embedded URLs, including one pointing to 'pelibifir.ru', strongly suggests a phishing or credential harvesting attempt. The primary attack vector appears to be social engineering via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/award?keyword=bpel+interview+questions+and+answers+pdf PDF link annotation
    • http://bufo.online/cronica_de_una_muerte_anunciada_capitulo_4_resumen_cortohw1qk.pdfIn PDF document text
    • http://lifeshop.pro/alphabet_matching_worksheet_preschool87l13.pdfIn PDF document text
    • http://timelessdecorum.com/437195879823rsaf.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/29536532910.pdfIn PDF document text
    • http://pro-komp-master.website/4525175277ane3k.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/bubimiro.pdfIn PDF document text
    • http://gapilojazixo.getenjoyment.net/club_car_ds_golf_cart_enclosures.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://divojeniro.epizy.com/arduino_ide_user_manual.pdfIn PDF document text
    • http://resipivoxopir.rf.gd/nigosukaxifino.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/kewetosowepotenureluj.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/gumor.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/anion_and_cation_worksheet.pdfIn PDF document text
    • http://sukuvafeliji.epizy.com/jonaxelunupota.pdfIn PDF document text
    • http://xamunenefo.rf.gd/compound_sentence_worksheet_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/granny_smith_game_free_for_pc.pdfIn PDF document text
    • http://wejajesenopezoj.onlinewebshop.net/71298689788.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/zifodidoni.pdfIn PDF document text
    • http://dopexatatadad.epizy.com/pujerivunikekegawugo.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/kixani.pdfIn PDF document text
    • http://gedijusopekud.epizy.com/jakoz.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/analytic_geometry_textbook.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69F 5364 bytes
SHA-256: 81048ed1015f2f95c94cf23fcae966cd449b31d1aacbd15ba6d1b86e489b06e8
font_01_sfnt_off00010901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10901 10088 bytes
SHA-256: 9b0d4816a0d6f08889b18098341e3b8052d1b0c6800c9d1b6902dd37c1152575

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