Malicious PDF — malware analysis report

Static analysis result for SHA-256 e643bc8a13189308…

MALICIOUS

PDF

71.9 KB Created: 2021-02-24 12:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f67e063e16418cc768900d95e7bb6b60 SHA-1: 724de001d883c895f310918a48e3d7eab1aec7a0 SHA-256: e643bc8a1318930897f8fa0fabb238537ca50e3af4f47d733953ff29d8203cba
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 numerous embedded URLs, suggesting it is designed to redirect users to external sites, likely for phishing or malware distribution. The presence of PDF-specific heuristics further supports its role as a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=gba+emulator+android+apk+2018 PDF link annotation
    • https://cdn.sqhk.co/delobepaziw/igjgwgQ/nasa_asteroid_watch_june_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nisikevepoxi/hd3hraM/youtube_sound_booster_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxofalu/Shbhdib/82527369219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488574/normal_6019aed187914.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/RMWig9y/4_drop_ball_hitch.pdfIn PDF document text
    • https://cdn.sqhk.co/bugabowozi/jcr1hcc/classical_music_radio_boston.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/hHaRrxX/neogeo_battle_coliseum_rom.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/Xf4XrZv/dalirumorizatemo.pdfIn PDF document text
    • http://allerop.xyz/why_did_the_reconstruction_end_in_1877op5eg.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/qihhfnG/sugulekuvanuj.pdfIn PDF document text
    • https://cdn.sqhk.co/tifobebe/qGmMbjj/50053732164.pdfIn PDF document text
    • http://grigolia-studio.ru/outer_ear_infections_in_adults_symptoms2mxk2.pdfIn PDF document text
    • http://douchehub.xyz/xigufasupojikareseruxc4blt.pdfIn PDF document text
    • http://creampiepow.club/kawenuxubofiwezetabuj14j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB64 5684 bytes
SHA-256: c1dc0b308d785bd36296bdad7df8efaa0391fc3ce7a171574264ca24f3833ba8
font_01_sfnt_off0000eea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA1 10496 bytes
SHA-256: 5324a410a3801d52747d430c499f09470e3d6c5648f1b6cc8a3c957f4ec39367