Malicious PDF — malware analysis report

Static analysis result for SHA-256 beff0284a5b6f085…

MALICIOUS

PDF

100.3 KB Created: 2021-03-22 11:06:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ff8827d4b3b5e2d99ed3488c2dfea17f SHA-1: be280650a6e4f266dcc89e864b593f7f52480136 SHA-256: beff0284a5b6f085c211f13d1b7ade0fe322dcab2d0a3dfb980887542be6b7f6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to astrology predictions, suggesting a lure to entice users to click the malicious link.

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://seumenha.ru/aws?utm_term=2020+vedic+astrology+world+predictions PDF link annotation
    • https://cdn.sqhk.co/rorezina/bhijhb9/tojelarevazawajodeviw.pdfIn PDF document text
    • https://cdn.sqhk.co/vuveleni/heEhijh/sepusigizogozo.pdfIn PDF document text
    • https://cdn.sqhk.co/losegiro/jjbPKgg/major_depressive_disorder_fact_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454672/normal_6035020f3c236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488315/normal_604d075598e0f.pdfIn PDF document text
    • https://cdn.sqhk.co/rokatodupi/tggieVp/huntington_harbor_mobile_home_park.pdfIn PDF document text
    • https://cdn.sqhk.co/sukonazukuv/gdbMjg0/filopi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405929/normal_603509426b2ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408330/normal_5ffcd17560103.pdfIn PDF document text
    • http://sutiboju.sportsontheweb.net/gofaretu.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/zidosozawok/54444768738.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/baby_trend_sit_and_stand_stroller_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88eb3775-f9a9-43c1-95dc-ceb5e22def66/sipepiguzimak.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/40503270940.pdfIn PDF document text
    • http://fusozevukatamir.atwebpages.com/adhd_medication_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/lastpass_google_chrome_extension.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0a1084-0873-47c9-ac59-d5af290cd507/what_is_the_equation_for_average_angular_acceleration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ca274a6-cec1-4210-8cc8-1e49e31ec990/wudaxisakedurevolalofu.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/60407626454.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/human_impact_on_marine_ecosystems.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_off00014ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC6 5676 bytes
SHA-256: 98afe1a4f4725e2682500b25e48d5f1c8dd9e149984efa43a19600c1a1248569
font_01_sfnt_off00015e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E3B 11048 bytes
SHA-256: 1f891fb257702caae66b92481dfcb3710c8f7915e5a92ad1cb45ab7883bee7b8

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