Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ba66bb38a945bb…

MALICIOUS

PDF

83.3 KB Created: 2021-04-23 09:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ddb6f0e5766b7c07e16947dbe6188da3 SHA-1: d93ec08725dc6f1a3237e990f7cf780e176e9a94 SHA-256: 23ba66bb38a945bb659ab3be6ad90bd05ac394a3cecf2b640fa4f97045e8adbc
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 0.9998

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://dugedepap.ru/strik?utm_term=are+washington+state+covid+numbers+going+down PDF link annotation
    • http://moscow-siberian-force.online/camille_paglia_az_quotesqvviz.pdfIn PDF document text
    • http://serdyukov.pro/dunkin_donuts_iced_coffee_bottle_nutrition_facts5d6dk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5fda5e008127b.pdfIn PDF document text
    • http://metiwizonud.getenjoyment.net/data_analysis_defined.pdfIn PDF document text
    • http://braco.ru/liguzay49c.pdfIn PDF document text
    • http://babysampler.com/22721671622atfss.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497346/normal_60248dfbd48e9.pdfIn PDF document text
    • http://ruluzuzadol.mypressonline.com/51690725494.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/khjjdhb/70173472846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422894/normal_601f18ba02042.pdfIn PDF document text
    • http://bawilidow.mypressonline.com/83383211114.pdfIn PDF document text
    • http://save50it.pro/dye_proto_rail_boltxf7wg.pdfIn PDF document text
    • http://takipleskazan.org/eyelash_extension_training_courses560vm.pdfIn PDF document text
    • https://cdn.sqhk.co/karopepagu/7hficjh/tukupomi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jebokizez/mikapurujir.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/fozigelodowusevi.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/72158312482.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/kuburelupimijilojikuzubi.pdfIn PDF document text
    • http://bitujiduruv.myartsonline.com/portland_oregon_map.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3C 5484 bytes
SHA-256: 769a15ad466711c32b1dcf66fb190f58351cd0b21e69f8813eadc4412e14ff3a
font_01_sfnt_off00010dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC4 10512 bytes
SHA-256: 3e99ee15eaebbd75a2a4e081d7bf1aff34a39b342c2f465fd0460b2de36bba7f
font_02_sfnt_off000131cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131CB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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