Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a2205e1db91fce…

MALICIOUS

PDF

79.6 KB Created: 2021-04-19 08:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4ab8e7f6b06312c80280d8bea5cc71c9 SHA-1: 326c7d9e894b2b24b541290613e5ebdad760541b SHA-256: 87a2205e1db91fce4386374402d25e7357848187ffd5a8b2c8d7515852cb7074
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be part of a phishing or malicious campaign, disguised as a link to read 'Rich Dad Poor Dad' online. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or malware delivery.

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://kuzutuzo.ru/strik?utm_term=rich+dad+poor+dad+free+online+read PDF link annotation
    • http://samozanyat.info/xilifujanoxarugd6y1.pdfIn PDF document text
    • http://golden-bridge.pro/is_there_going_to_be_a_how_to_train_your_dragon_3h63pr.pdfIn PDF document text
    • http://2gusevshop.space/importance_of_investigative_reportinggr4jt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_60679f681fc39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482872/normal_5fcc826e452d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371265/normal_5fca85d928701.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499979/normal_5ff589fb62ad3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_6046b08c5805f.pdfIn PDF document text
    • http://fitit.space/pozinilagixusuzulciti.pdfIn PDF document text
    • http://storeyou.store/nitawegatajinawimugnmcz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414339/normal_5ff35ebcc1889.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_9c176bed14834da194c039b1d6915971.pdf?index=trueIn PDF document text
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_eb89ea5a456e4f0ba1b55ebaba470d14.pdf?index=trueIn PDF document text
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_490acc2fafd844229939fb1fa1a581b8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f945d3-9942-4d8d-87ec-c409ead76f9c/rivixidi.pdfIn PDF document text
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_1ad1260972174c408f47e9b56e516670.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c8be03b-b624-4df3-93fd-63e4f62861e0/kuvoxajopam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27fb5882-ee00-489e-8c03-ac522c455474/84078610231.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_off0000fb08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB08 5072 bytes
SHA-256: 91c1408fed781d7c52d8ff20244f8b24278fc78e18d9ccbefc96ff671b186c23
font_01_sfnt_off00010c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4C 10996 bytes
SHA-256: eb67cfcbd4ef6efa83b2b1015ce7eccf674ac0a6370e3fbb36c31cc7bea56288

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