Malicious PDF — malware analysis report

Static analysis result for SHA-256 8639556a681b2bc6…

MALICIOUS

PDF

255.8 KB Created: 2021-05-12 00:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ce34a60646c307dbb401744a7bc816c4 SHA-1: 5898dde353ba35994ec60b9312cff6f880d383ff SHA-256: 8639556a681b2bc689fb71d9862f5035f70c36ec2682b0269a5d6a7fdf681986
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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://xezojetit.ru/strik?utm_term=char+broil+bbq+cover PDF link annotation
    • https://rusijarumeza.weebly.com/uploads/1/3/1/8/131871651/3381674.pdfIn PDF document text
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/febazavupimuraba.pdfIn PDF document text
    • https://ditixalopu.weebly.com/uploads/1/3/1/4/131410538/zaxixaxagubolaz_kekafizoz.pdfIn PDF document text
    • http://mupejejewij.iblogger.org/mimenajowuwejegov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391920/normal_6047497100c4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453102/normal_604bac0312de2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468268/normal_5fd9f6dc4d672.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://kekarizirisa.rf.gd/critical_limb_ischemia_guidelines.pdfIn PDF document text
    • http://gisobugiwe.rf.gd/what_does_the_song_yankee_doodle_dandy_mean.pdfIn PDF document text
    • http://kotidaw.epizy.com/bridge_builder_adventure_mod_apk.pdfIn PDF document text
    • http://vanopibabo.rf.gd/allen_bradley_powerflex_40p.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/xigarewikir.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/osrs_bandos_guide_tank.pdfIn PDF document text
    • http://tovetetuw.rf.gd/74437251073.pdfIn PDF document text
    • http://nokigabexotuk.rf.gd/position_tracking_accelerometer_gyroscope_android.pdfIn PDF document text
    • http://mefinuxewo.epizy.com/marcelo_quiroga_santa_cruz.pdfIn PDF document text
    • http://xupefezamu.epizy.com/wonejuzunotovir.pdfIn PDF document text
    • http://poluxik.epizy.com/miley_cyrus_butterfly_fly_away_sheet_music.pdfIn PDF document text
    • http://toridefe.rf.gd/balaenoptera_physalus.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001156a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1156A 216792 bytes
SHA-256: 152f83f52a6ce0dff135d6895f45e52f8c281bd53a90ddf6c43bbbe96ebba77c
font_01_sfnt_off000390f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x390F9 4660 bytes
SHA-256: 7606892a7f5e00bf84d38fb807dab54c0f6fcfdec615f8dbbacfeece91380499
font_02_sfnt_off0003a0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A0E9 13752 bytes
SHA-256: a6b6b1511170e0037375ef4fdab47a85137be2fa4aee0dee5ead09966f26cd2c
font_03_sfnt_off0003cd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CD90 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_04_sfnt_off0003e2be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E2BE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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