Malicious PDF — malware analysis report

Static analysis result for SHA-256 684f14765867ec8d…

MALICIOUS

PDF

77.5 KB Created: 2021-02-26 22:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 54e3154c63674df2fca0eacc54662ca9 SHA-1: cd0197dfff03da6e4e52014e9573c293083eca68 SHA-256: 684f14765867ec8dba57407310c6501a5bbf8010f0285ac97073f1847a28381f
96 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, indicating a high likelihood of malicious intent. It contains an embedded external URI pointing to 'https://golowaki.ru/wix?keyword=renny+ottolina+frases', which is likely used for phishing or to download a secondary payload. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs and the malware detection strongly suggest a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=renny+ottolina+frases PDF link annotation
    • http://choosemadam.site/ejercicios_verbos_regulares_e_irregulares_espaolv2qid.pdfIn PDF document text
    • http://shopsmmv.site/1659474137116rve.pdfIn PDF document text
    • http://puliliraforuwu.22web.org/defezixizezowuxu.pdfIn PDF document text
    • http://datujizid.iblogger.org/40853307713.pdfIn PDF document text
    • http://interbank.link/84101171082r1um6.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/43538127695.pdfIn PDF document text
    • http://fusegufuw.iblogger.org/xepibalu.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/44206139509.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/how_to_pair_airtel_dth_remote_with_panasonic_tv_remote.pdfIn PDF document text
    • http://taptopbot.com/meteor_shower_animal_crossing_new_horizons_datesltzz3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lojixebaxademim.epizy.com/audio_video_converter_for_android_apk.pdfIn PDF document text
    • http://nelaxufap.rf.gd/musical_notes_tattoos.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/gutewibitujira.pdfIn PDF document text
    • http://fajazimigig.atwebpages.com/16376791587.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/200_bubble_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/miya_bhai_song_dj_remix_mp4.pdfIn PDF document text
    • http://ronaxunejononot.rf.gd/tarrega_carnival_of_venice.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/81741781072.pdfIn PDF document text
    • http://badubitoj.epizy.com/forever_21_warehouse_sale_2020.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/60171639019.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CF 4660 bytes
SHA-256: 3e44cd2dbfaa3834ade5c6b60360892e2a5eb1c52510b9bbba44af883f52af5a
font_01_sfnt_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 10692 bytes
SHA-256: e1a2c5c7f547bd7aa36fbaf51b1ccd2a353f85bae6b9623e3b707589ce9d1de7
font_02_sfnt_off00011b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B16 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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