Malicious PDF — malware analysis report

Static analysis result for SHA-256 89072a18b1e4aa01…

MALICIOUS

PDF

89.8 KB Created: 2021-03-20 22:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: be1e9e361357de749f7efbb478c72df4 SHA-1: d2b7ecdebdf0463dcc547d8ec0b7274ce039f55c SHA-256: 89072a18b1e4aa01d0bbfef55ceeee61f7d08b75002cb1eda750d0aa97a9c14c
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://maypoin.ru/123?utm_term=bates+motel+5+temporada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465537/normal_604d4e9f69b38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_6048a0ae5880c.pdfIn PDF document text
    • http://lovumodezubudem.iblogger.org/chori_chori_movie_video_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5ff692043d33e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495837/normal_60062501141fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465388/normal_60125ffd18205.pdfIn PDF document text
    • http://patewukezevo.iblogger.org/holistic_dog_food_feeding_guide.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/somisilegex/why_wont_my_coffee_maker_turn_on.pdfIn PDF document text
    • http://sobegomogi.rf.gd/vajizexonem.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/rt-ac53_default_password.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/kegararedeguzijasimul.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/sibelius_andante_festivo_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/chennai_express_full_movie_400mb_hd.pdfIn PDF document text
    • http://baxovebiw.rf.gd/gibelavejidalonuzuxog.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/itunes_store_verify_billing_information.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/survival_food_buckets_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/decf8ed9-5066-4317-8943-f9bf98210f34/loranobon.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/saskatoon_health_inspection_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/lomaxagosatojetedetelevix.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/verizon_fios_dns_server_not_responding.pdfIn PDF document text
    • http://tozuduxaxikagik.rf.gd/70690243087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/178724b8-0406-42ba-8772-5978e3337fa0/1-1000_multiplication_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_off00011c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C41 5280 bytes
SHA-256: 0e310430ecbdef73c7b63072b7f2f94e2901dc152fc15835930e811c935e8bca
font_01_sfnt_off00012e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1A 13132 bytes
SHA-256: fe66aca59444aff3ff88684d2d9068fbb494b88c47ade65f74e2f89a81aa9feb

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