Malicious PDF — malware analysis report

Static analysis result for SHA-256 b292782d40bbb00c…

MALICIOUS

PDF

89.0 KB Created: 2021-03-16 07:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1dc6fe0c73f594d5ee054012f6974daf SHA-1: 5fdb86f4f085e9e32c8ba560c511841332c0b371 SHA-256: b292782d40bbb00c05968f8672813b025418cb8bdf3e4b048897733cd992d658
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-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://lozipotod.ru/aws?utm_term=how+to+critically+evaluate+a+poem PDF link annotation
    • http://xrootunited.com/fomerihgoa.pdfIn PDF document text
    • http://raisinshub.club/kamosuduwekifs8zh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469106/normal_60406d81e2e75.pdfIn PDF document text
    • http://ryukzak.digital/zetudezumumunc8qd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5ffcd98ae00a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495050/normal_60037cfccb34e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368467/normal_5fffb83415d73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425229/normal_604940d0698b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467573/normal_600cd02dd07bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453326/normal_603be7d293ac0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_601613311e796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_60141f8e811e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414336/normal_600009dfac437.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/boxujetanonikuv/charles_bukowski_poems.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/buell_1125r_performance_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/self-_guided_core_values_assessment.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_off00012087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12087 5116 bytes
SHA-256: 054f042ff4ea8fbfbab8c69bd91b6198dce04375dcfcb30b1026e573f98295ee
font_01_sfnt_off000131f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131F4 10804 bytes
SHA-256: 63724907ddcc7a5662431e425375f1a462444777b73313901c2be5b1ca9b725c

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