Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d7a120b5efad8a…

MALICIOUS

PDF

81.6 KB Created: 2021-04-01 11:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c8e9e4ada6a06194b8acab70be992ea2 SHA-1: 9bdacdf0ae2501487dfd3d9a8f50db393af4011f SHA-256: 98d7a120b5efad8a3a89143f1663ced60f547010822372e952460e5c54d5e9d8
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 0.9997

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://crophysi.ru/strik?utm_term=how+much+salt+consumption+per+day PDF link annotation
    • http://bitcoinlearningcentre.online/checking_available_balance_vs_current_balance11vfu.pdfIn PDF document text
    • http://creditscoretracking.info/70778569418mza09.pdfIn PDF document text
    • http://tobepotalesozaj.22web.org/bugaboos_weather_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461245/normal_5ff909e6e639b.pdfIn PDF document text
    • http://asta-stroy.ru/who_tb_infection_control_guidelines9dnvk.pdfIn PDF document text
    • https://cdn.sqhk.co/wisisatofife/gebiiIL/pb_garena_zepetto_login.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390350/normal_5feb865c15522.pdfIn PDF document text
    • https://cdn.sqhk.co/dakubakasilu/gh6kifa/47418013218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467950/normal_60394f1118aad.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/eicjaic/revuvukenofarafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417808/normal_6031f7852d1e5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vexeliku/sinizupumibep.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/hp_scanjet_5590_manual_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/dibrugarh_university_bsc_mathematics_major_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/unity_asset_store_2d_character_animation.pdfIn PDF document text
    • http://nawatelobuj.rf.gd/80750499698.pdfIn PDF document text
    • http://lenumizisil.rf.gd/ruzedikiribobosulanumiz.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/how_to_assemble_shop_vac_4_gallon.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/modal_verbs_exercises_upper_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/difiredafetajonutugebo.pdfIn PDF document text
    • http://setategavatanag.rf.gd/asm_metals_handbook_volume_4a.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/63985804159.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_off0000ff9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9E 5468 bytes
SHA-256: 63a2c2c7ece580b8721926a849f52b05f8511bd2bf7a2abf3b6fcfaf281c5880
font_01_sfnt_off00011221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11221 11032 bytes
SHA-256: da2ef5e8471c2b79781be8c546b04d8358aad191b3f35756bcd6516ce291bc0d

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