Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3aafece34263244…

MALICIOUS

PDF

76.8 KB Created: 2021-04-16 14:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bd76a113073c0a5e0648652f45387624 SHA-1: cf58a5fa2e20be76caef83ca51408c01cc938d7b SHA-256: e3aafece34263244b56ed1ff4532f557f5ae2a5708748f4bfb8de1ef7c78a8d3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to technical documentation, likely to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/strik?utm_term=tcp+ip+illustrated+volume+3+pdf PDF link annotation
    • https://cdn.sqhk.co/nobixapo/cDGgdGR/social_detective_book.pdfIn PDF document text
    • https://cdn.sqhk.co/xelalizogim/fE56Kje/galaxy_shooter_alien_attack_mod_apk.pdfIn PDF document text
    • http://citimart.online/pezodemakodeterr999.pdfIn PDF document text
    • http://kimiter.medianewsonline.com/arkabutla_lake_map.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480579/normal_5ffe4472b1d95.pdfIn PDF document text
    • http://vogudikomi.getenjoyment.net/anaconda_machine_learning.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/QtgcNia/the_walking_dead_season_2_game_soundtrack_list.pdfIn PDF document text
    • http://inmyshtangen.xyz/comptia_network_n10-_007_free_downloadah2mf.pdfIn PDF document text
    • http://vojemodipu.sportsontheweb.net/fogebisegosufo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499023/normal_6042c21867b25.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/nasumefalotix.pdfIn PDF document text
    • http://allmedbook.com/heroes_of_might_and_magic_3_dungeon_unitsjqbua.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481839/normal_5fca9c2197aa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403688/normal_6055f039cdb29.pdfIn PDF document text
    • http://webcam-model.online/53410803983z8te3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379233/normal_602595527598f.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/debiwelof/tefaritele.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/1471041902.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/52736422854.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/granny_outwitt_mod_apk_1._7._3.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/how_to_add_data_labels_in_excel_pie_chart.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_off0000ec5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5F 5472 bytes
SHA-256: 637fbf44cdba6705d4d1797366623540eb835a9d6a732d7cddbc4ff5e63b6eca
font_01_sfnt_off0000feee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEE 10840 bytes
SHA-256: d8ddf9843a3f14a837e261132556799c5dd4555cd8e9bfc61a9d5a7df1728bc4

Open this report in the interactive analyzer, or submit your own file for analysis.