Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78458122d4af1b6…

MALICIOUS

PDF

76.1 KB Created: 2021-04-06 09:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 45feb888ae82d43eb05919db179dab2d SHA-1: 56353f0c004d2bdc71f4d603d4d04e70344851c1 SHA-256: c78458122d4af1b6c3fd236ef0ea2e0d4c4462687f0a94ff07eb9b9a3e19d39b
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 0.9996

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://baarspo.ru/strik?utm_term=adobe+illustrator+cs5+1+serial+number+for+windows PDF link annotation
    • http://lakuberik.mywebcommunity.org/vodisakufitota.pdfIn PDF document text
    • https://cdn.sqhk.co/dasewugiru/3G0ielT/uncertainty_definition_environmental_science.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/nAhishi/ethereum_blockchain_explorer_api.pdfIn PDF document text
    • http://vefefex.iblogger.org/93381130067.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/jeihkjc/91896227871.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/ninasivol/96211432928.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/42788764694.pdfIn PDF document text
    • http://rewifavad.epizy.com/animals_coloring.pdfIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_5ca1824830c84084970d1ded1ca15d2d.pdf?index=trueIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_ba61242fff2141edbe0b61f79e4568ef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/chhello_divas_720p.pdfIn PDF document text
    • http://relisedozoru.epizy.com/34139267962.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/17148132780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bd1d148-0558-4108-88da-378d8cf96f42/sadukul.pdfIn PDF document text
    • http://pozufubaju.rf.gd/fijuditibafonupip.pdfIn PDF document text
    • https://3a0d5408-2ea1-4258-8d29-5d96341cad2c.filesusr.com/ugd/79cb75_293c5024779a4222b5d344d7f3fe5e6a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7912d6ff-1db4-4390-80d0-711a387ea4a2/authentication_method_failed_passcode_format_error.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed67da9-b040-403c-8f46-60f38592f278/xuwonupezutitudosilagor.pdfIn PDF document text
    • http://situwosase.myartsonline.com/bourdon_tube_pressure_gauge_calibration_procedure.pdfIn PDF document text
    • http://dereworizezo.epizy.com/71532719215.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/6175953425.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_off0000e8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C7 5564 bytes
SHA-256: 6b3e9299ad5742d22dc72e76b732b1502091c81036d7a264a04fc4992d72c03b
font_01_sfnt_off0000fbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBA 10792 bytes
SHA-256: 874855fee8d95392e474c77ee06f1c8fe650c687519ff1e2e90a73049492df7c

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