Malicious PDF — malware analysis report

Static analysis result for SHA-256 47eb20bf3f0ac07b…

MALICIOUS

PDF

71.6 KB Created: 2021-03-23 22:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9ec24001dcacbe66f4e219ce3891fab6 SHA-1: e0aafa4f5a6f80955daf6bc467b8cd674c22a98d SHA-256: 47eb20bf3f0ac07baf61aa89870efa0db0929e5c71a8efeb41fd68713eea5c75
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'lozipotod.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to educational worksheets, a common tactic for social engineering.

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://lozipotod.ru/wix?keyword=adjective+and+adverb+clauses+worksheets+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473056/normal_60010e4691e20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_603b8f3243a94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468261/normal_5ff96909d8906.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383698/normal_5fec6c960c949.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406168/normal_6008ec826a9fe.pdfIn PDF document text
    • http://totufozumad.iblogger.org/mockito_java_8_doanswer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403415/normal_5fef9280ebb47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_60425ed2ac1e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447888/normal_5ffb8c9ceb7b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531626/normal_60205f69c345f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_6054932f30a73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368246/normal_5fee173ff4213.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f7476ca-51c8-4a82-9813-8dfac88e09e9/64588038953.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/how_to_replace_battery_on_ipod_classic_30gb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e18848-44ed-4154-b769-9a8912bca694/vorixuzaxewip.pdfIn PDF document text
    • http://sasukagisodubex.onlinewebshop.net/sopenaziroxugifomuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ae1e28-9e0a-4ebd-a6a0-50f147a7e894/powerflex_700_wiring_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/790eec3f-1bc7-4ad1-9578-2338aed04201/how_to_reset_maintenance_light_toyota_prius_2013.pdfIn PDF document text
    • http://xenuviwiduf.epizy.com/metamorfosis_de_la_mariposa_para_nios_para_colorear.pdfIn PDF document text
    • http://bagesexepori.epizy.com/marlin_model_60_wood_stock_replacement.pdfIn PDF document text
    • http://boragilaz.rf.gd/89490534898.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_off0000da22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA22 5664 bytes
SHA-256: f95b5e1c5e34c4d81d4bf7dc3a72b013b9a74f6d52429b7d8c6f0fff2dc5fdf6
font_01_sfnt_off0000ed78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED78 10384 bytes
SHA-256: f696e23de1788aa983435ff7123962e6429c393f37904f1189f51d2cde7a4a40

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