Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc66b1e919b0e42…

MALICIOUS

PDF

110.8 KB Created: 2021-03-19 11:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4d5fb30e3de7aa50f388f9277d0074cb SHA-1: b264695441fe42fe62fe72600eb33f72f8367e84 SHA-256: 0bc66b1e919b0e4253eebb1f309dd36cc7e4e65c4fb90e3d254b53379169b3c4
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 0.9993

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://fokemale.ru/award?keyword=biostatistics+short+notes+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421767/normal_5fcb5c1abb8af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447647/normal_5ff4fe54e6ce8.pdfIn PDF document text
    • https://vademakab.weebly.com/uploads/1/3/1/3/131380849/visemeberine-ruxoxeta-ribudabuk-nadegasexututew.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/hamihc3/idle_coffee_corp.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/zuxovenozajelabo.pdfIn PDF document text
    • https://numezuledidi.weebly.com/uploads/1/3/4/0/134096646/wigimugopava_tewodunomivafus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498366/normal_5fec4ea5782a8.pdfIn PDF document text
    • https://zurudepovog.weebly.com/uploads/1/3/1/4/131438860/sexaronalaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5fdc5d3de2583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491410/normal_602fc0b7c28cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_603030ae59d4c.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/ohitm6g/cyanogenmod_9_stable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391008/normal_5ff5a3fe2232d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471236/normal_5fcac5f2222c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_600c44014d4c0.pdfIn PDF document text
    • https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/jebaxawisujud.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/jixerubowi/neet_2020_syllabus_by_nta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d0d048-6f85-4e1c-bc8e-26be6c361b25/vulinexotepifi.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/calculadora_para_convertir_de_mililitros_a_gramos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20dcca5b-5691-4807-a368-a36610163e9f/quiero_aprender_hablar_ingles_rapido_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/wurizaremu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504ddece-6137-4a6f-a799-e878b760df4b/rowe_ami_jukebox_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/13877020399.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A24 5260 bytes
SHA-256: 97c48448abad9c7291a0d605201cc7c4c8484281470013fe04bc4a3aa1f9db3a
font_01_sfnt_off00016c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C02 13824 bytes
SHA-256: 180f76cba2238059014ab203bdea50ff65d6dff60f527f179cefa8da9075032b
font_02_sfnt_off000198ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x198EA 16084 bytes
SHA-256: 1513cff1140ee46b119fd1f1a8d89226c35fa745519edd36504e398b791a408b

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