Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf05097c253d443e…

MALICIOUS

PDF

87.8 KB Created: 2021-03-28 22:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0b71c147cbbf78c3aaa0889517e0a932 SHA-1: 922b92e318730d2ec0d46a4fcf4eac83964151b5 SHA-256: cf05097c253d443ee587e6d431e438fec3c97c99f7be7f9de09d59a7d39fdfb7
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-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://vilenefex.ru/wix?keyword=american+dragon+games+unblocked PDF link annotation
    • https://cdn.sqhk.co/totudavomud/ieFUdhd/aesthetic_houseparty_logo_pink.pdfIn PDF document text
    • http://dkblogin-de.best/44806370986zpadj.pdfIn PDF document text
    • http://samafutanub.mypressonline.com/89353096047.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzowadijavu/OjdwrNa/49018973046.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/xusarofenagudawu.pdfIn PDF document text
    • https://cdn.sqhk.co/mezewimaxus/cjfWjix/wrinkle_spray_clothes.pdfIn PDF document text
    • http://jurabosuw.22web.org/data_sheet_of_adc.pdfIn PDF document text
    • http://getchambre.xyz/classifying_triangles_worksheet_3rd_gradeochnj.pdfIn PDF document text
    • http://koreanluxe.com/nalegevafomevepibapago6bwa.pdfIn PDF document text
    • http://fekedusotuxena.iblogger.org/1956991787.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/26b56341-3144-4b4e-b7af-1aae4bf18b14/72258154892.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/ijazat_movie_full_song.pdfIn PDF document text
    • http://rerivumisiso.rf.gd/86048939520.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/zemadav.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/fovozu.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/ribiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed360c7e-ff5a-4832-ad44-49ee781e731d/28742443149.pdfIn PDF document text
    • http://jusudab.epizy.com/sign_off_document_template_word.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_off00011924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11924 5452 bytes
SHA-256: fcc86f584ee1dfe56b7b50ef51db7e173c6ba257d716a37b2f58544cd6d8ee74
font_01_sfnt_off00012b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B96 11556 bytes
SHA-256: 4ced248a3b9e6f7503d969772c94dfb3cebd6101c78cdff054cb846cdc21b7a8

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