Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97e8ddb88baf295…

MALICIOUS

PDF

79.8 KB Created: 2021-04-02 00:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 88df598274e38af50a524964cfbff832 SHA-1: 94faa0e953cb0bbc7a064bead92537bbe249d598 SHA-256: e97e8ddb88baf2958b4de2fac0776f02113e4328eb809d9e8697b3b8ae18f9fa
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=supply+chain+management+major+salary PDF link annotation
    • https://fazolusafiwef.weebly.com/uploads/1/3/4/5/134585025/zusowujavelug_mupamumufugin.pdfIn PDF document text
    • http://busotokebos.iblogger.org/wonosinipuwobumuwewabim.pdfIn PDF document text
    • https://zuwadakake.weebly.com/uploads/1/3/4/6/134664894/f07d0ee.pdfIn PDF document text
    • http://loberas.22web.org/62969779021.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/sevoga/brother_hl-2170w_wireless_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/yet_already_present_perfect.pdfIn PDF document text
    • http://mibiravotawuga.epizy.com/totov.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/how_long_is_paternity_leave_for.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/bikuguzezider.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_89725e11376a46f18258207bad81c1c3.pdf?index=trueIn PDF document text
    • https://a540aa65-2eb1-4ac3-86d0-bf6a54daac96.filesusr.com/ugd/2d797c_7329805a1f194557af90db14f99e2f22.pdf?index=trueIn PDF document text
    • https://5a98ae10-8c7e-48da-b83f-9bcbc644cfa3.filesusr.com/ugd/9a8764_ba9ff8cc638c475093df01587a3f20c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/17981569511.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_eb24f705af4943e6baf68910615dff03.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/echo_dot_4_user_guide.pdfIn PDF document text
    • http://bebefavovujeji.rf.gd/clear_speech_strategies_visual.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/41309459348.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/58460289851.pdfIn PDF document text
    • http://lafosowewamute.epizy.com/what_does_god_say_about_positivity.pdfIn PDF document text
    • https://a79fbd7c-12a6-44fe-9d3c-43dc2b0795a8.filesusr.com/ugd/f95141_d0d6220eab4e427f8c06453bb3ec1ec6.pdf?index=trueIn PDF document text
    • https://c96d0889-97fb-4213-90a4-a08ae01970e6.filesusr.com/ugd/ed32f2_59d3b835a3c9447bba5f2f320fa09df6.pdf?index=trueIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_ee7d6fdde9ec4ca78b330bf68190807a.pdf?index=trueIn PDF document text
    • https://9f8d2299-7940-47c4-a046-e85ed12f0e8f.filesusr.com/ugd/237bf7_89ad839c9c7d4928bae371b9a66d0f5d.pdf?index=trueIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_20d7aa239a104c9ab3f2b5590472e4ec.pdf?index=trueIn 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_off0000fa39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA39 5628 bytes
SHA-256: 5ae7b09d7cc7448cc6abea10d64dfb332786d807b2af87268e9d16511633f5a6
font_01_sfnt_off00010d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3C 10632 bytes
SHA-256: 0990ad5e657f6168b7e5124e51a3a236861679d0fd841a1bb598c8b05b0fc581

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