Malicious PDF — malware analysis report

Static analysis result for SHA-256 8da9353754513d4f…

MALICIOUS

PDF

77.6 KB Created: 2021-02-23 04:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a66672736d122fedd1a22650bd9309e SHA-1: 434abdd534ea91d70af898ca0ef7ef79c8e33d6f SHA-256: 8da9353754513d4f53dcd0ff36ad9063ecc14145029e06ee859fa823fa235a2b
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a URL designed to mimic a search result for a "fake book pdf". ClamAV detection and ML classification strongly indicate maliciousness. The embedded URL likely serves as a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=broadway+fake+book+pdf
    • http://4bochki.ru/gafifokajizewixamotupazoa04sa.pdf
    • https://static.s123-cdn-static.com/uploads/4476580/normal_5fe14b46b5b0c.pdf
    • http://hugertely.xyz/nifitavilsrt37.pdf
    • http://lovechat24.club/rozapegojonigojememevoko67ni2.pdf
    • https://cdn.sqhk.co/wefadegese/ie5Qghf/king_s_raid_successors_of_the_will_kasel.pdf
    • https://cdn.sqhk.co/kapapomabu/bZgdV7n/vitamin_d_benefits_from_sun.pdf
    • http://jsexj.fun/77704426562t1f9g.pdf
    • http://qrastenmap.online/gunuzigupotagedu2r1m1.pdf
    • http://ctyr.ru/pandora_fms_user_guidenrszx.pdf
    • http://amorexpo.com/html_css_javascript_interview_questionsf7ali.pdf
    • https://cdn-cms.f-static.net/uploads/4388169/normal_6034506eafd65.pdf
    • http://netewe5.xyz/free_easy_piano_sheet_music_moonlight_sonataog964.pdf
    • http://lami-lashes.site/jomegolededotrtza9.pdf
    • https://cdn.sqhk.co/tuwetebep/AijDXic/bbc_video_talking_animals_alan.pdf
    • https://cdn-cms.f-static.net/uploads/4421352/normal_601cb38eb0340.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sokurunofizune.rf.gd/xogofijixugo.pdf
    • https://s3.amazonaws.com/jivagajamav/jumovugeditunori.pdf
    • https://s3.amazonaws.com/minabiwa/babul_pyare_full_hd_video_song.pdf
    • https://s3.amazonaws.com/wizuluworafid/46690932703.pdf
    • http://pogapebod.rf.gd/vajevigajiwonawoteb.pdf
    • https://s3.amazonaws.com/benuka/intentionally_defective_grantor_trust_tax_reporting.pdf
    • https://s3.amazonaws.com/fovezewi/codehs_super_karel_answers.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_off0000f2b5.bin
2665979be47712e46d5e42e11ab37b2f22c5013449edf7a5292f4b96903979da
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B5 5272 bytes
font_01_sfnt_off000104cf.bin
9ce35c6bb13360bc8d2e60f4f2b1c18ae32e4dad73f24186314d8a564c735488
pdf-font-stream PDF embedded font (sfnt) at offset 0x104CF 10672 bytes