Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0990cc153dcd9ff…

MALICIOUS

PDF

83.6 KB Created: 2021-03-29 20:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 50948ce780b451f2a4f9c74131c91da4 SHA-1: db6514ca507e5597b85c3b169437b3917fc953f5 SHA-256: a0990cc153dcd9ff4f4c8c0ff405ae426f06a09d0ef27755340ed63713317bbe
96 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. An embedded URI points to a suspicious domain, likely a phishing or malware distribution site. The document body is heavily obfuscated and contains what appears to be junk data, further suggesting malicious activity.

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://xezojetit.ru/strik?utm_term=5+interrogation+techniques PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381547/normal_603e949c3603a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475992/normal_602b93f8e811b.pdfIn PDF document text
    • http://naykaryadom.fun/63494013959fqpi5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482415/normal_5fdc2766bed2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446398/normal_6061ed2ab94f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5fdc589784e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504047/normal_5fdc1fa3cfe93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5fe1415040d8d.pdfIn PDF document text
    • http://cashfree.store/417490176263unag.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/29a42b3a-c3da-40e8-bad6-af2d17bf6e91/57009090345.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/annual_report_nestle_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/pewufafifewiwonidepujedof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e10c42-f7ca-4e78-9cbd-38c43337bdfa/o_come_to_the_altar_guitar_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26132fa0-58f8-4dc6-a9ac-9c8bf97b4631/48026598047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411dce83-790d-49ab-b916-87d12e1e3edf/putumufajevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/723083a5-97e1-4598-b1a3-7ddcff3499cd/how_to_connect_universal_remote_to_roku_streaming_stick.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/what_three_things_do_you_like_about_yourself.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce4b52ac-28e9-40ea-891c-3b2044a05801/gipinuseribesenejiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a105b4f0-a7f0-4a60-b0cc-d843a087e371/jump_force_character_pass_2.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/what_is_the_best_free_daw_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/google_analytics_report_sample_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e844b5-eda2-4e60-a691-698c3b668f74/machine_learning_models_explained_to_a_five-year-old.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_off000108c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C4 5184 bytes
SHA-256: 070aff4166ef3bf45f891496c309e8ce3cac8da9054f91ef0f1f08e6cfd165c3
font_01_sfnt_off00011a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5E 11488 bytes
SHA-256: 2b3e6a8cd260dcba686c6b566fdc37a84843b36a72cb962de535c1c72f29de3d

Open this report in the interactive analyzer, or submit your own file for analysis.