Malicious PDF — malware analysis report

Static analysis result for SHA-256 485247b5292821ba…

MALICIOUS

PDF

73.1 KB Created: 2021-02-22 06:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f2e680f1aec9e5f37dbda8893307836e SHA-1: 711a1b0270af81ef15e476b30de5bdb8b7b46e20 SHA-256: 485247b5292821bad4c779ce04ac4c8f4122feeb455e8ad11de57f8e6ee992ac
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body contains a URL that appears to be a lure, directing users to a potentially malicious website. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing or malicious content delivery attempt.

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://bologen.ru/wix?keyword=teenager+bikini+brands PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443810/normal_5fdaac85df1eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370547/normal_6006c69096dd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_603204a0128a3.pdfIn PDF document text
    • https://cdn.sqhk.co/sifomujotaxa/Dhajehf/zitabox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468289/normal_602a28c50c136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413851/normal_601c01a025c9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_602b613c2c2d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469630/normal_6032e4cca8c44.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/96657721647.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/kerore.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/zefur.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/dilineru.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/saracen_mineral_holdings_limited_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/dixitopidetamosetanejero.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/13500138694.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD521 4712 bytes
SHA-256: ae856f72d0333d395a3e10bbd6fcd8f4310835574433892aa12618cd2258b038
font_01_sfnt_off0000e51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51C 10560 bytes
SHA-256: 50712bb326b1c1aba6f3cef245e8f18a9361ff296c1c284922ed5a4ec407b0c3
font_02_sfnt_off0001093d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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