Malicious PDF — malware analysis report

Static analysis result for SHA-256 db510ee8ddc717b7…

MALICIOUS

PDF

106.8 KB Created: 2021-03-09 12:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dc78853eb2446e21721b81a55dd074f2 SHA-1: 560283c6ecdbb9215ab4d472fc68233f27b47941 SHA-256: db510ee8ddc717b773c992fb438e4bd042d41fc9ad711189f2a23b914d1aff02
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://dafemum.ru/award?keyword=birds+name+with+pictures+in+english+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486748/normal_5fd09f87f34ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380219/normal_5ff0ce87e93ca.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/betomewadajorokuzarafus639xl.pdfIn PDF document text
    • http://tojebaragokib.22web.org/kuzifutatedagu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407994/normal_6046f5ac617f2.pdfIn PDF document text
    • http://mrshadow.net/16406259314nfk2w.pdfIn PDF document text
    • http://vagiburenumow.iblogger.org/68610456706.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/53dd66a4-910c-4654-b5e7-21442f55e68c/war_of_the_worlds_radio_broadcast_panic.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/zegexowumisimuzumaf.pdfIn PDF document text
    • http://fejukuvazov.rf.gd/medici_masters_of_florence_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/5266165417.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/50685761647.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/44998302356.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/xisasuguzebumoruwekinaf.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/navy_maternity_prt_instruction.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/practice_of_the_presence_of_god_by_brother_lawrence.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/lagu_angklung_jogja_sing_biso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8683ee6-5065-4a99-9727-665f6963de6f/satellite_communication_systems_maral.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_off0001656b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1656B 5712 bytes
SHA-256: ad4df2696f6af99728222e54cef5c582b2138b89d90db1b6d4f32f8a67d3450b
font_01_sfnt_off000178c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x178C5 10888 bytes
SHA-256: e841a80b35596471a542d9188854a55c71596174fd4ef235b6945da6d61ccbe7

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