Malicious PDF — malware analysis report

Static analysis result for SHA-256 095d968966cc43f1…

MALICIOUS

PDF

74.8 KB Created: 2021-03-27 19:43:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7392b5f23d6f6c30b0d651d4c7aa50b1 SHA-1: d6f8a0f5db5d4b6e50bde76cae9f52531465a9f5 SHA-256: 095d968966cc43f17c90efb1fb15627d3178fba3b95ec047e3c6b22c29abe6de
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is part of an advance-fee scam, likely luring users with promises of prizes or funds, and directing them to external URLs. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt, potentially leveraging embedded JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jumiwimov.ru/123?utm_term=grammarly+application+free
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/6527557.pdf
    • https://witufulovavivoj.weebly.com/uploads/1/3/4/3/134351467/jifovudif.pdf
    • https://xatikofaf.weebly.com/uploads/1/3/0/8/130814669/2458175.pdf
    • https://paripipedaninez.weebly.com/uploads/1/3/4/4/134444050/9d6fb698.pdf
    • https://nejavolezi.weebly.com/uploads/1/3/4/0/134017816/7b6126c3347.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_97290d8fd9164bb5b24743e8d7da57e3.pdf?index=true
    • https://s3.amazonaws.com/wuzalugiseto/wewizi.pdf
    • https://s3.amazonaws.com/vuxalirudidel/ionic_side_menu_template_tutorial.pdf
    • https://ba30dffa-51fe-4caa-9472-6f142403a9bb.filesusr.com/ugd/c2007e_e867ef46ed684b3498a6ebe80be55fab.pdf?index=true
    • https://s3.amazonaws.com/fukepez/wiwarivar.pdf
    • https://80820154-e864-4b0c-832b-212b24169927.filesusr.com/ugd/c12414_aad6a2f8589440e0b5555a70143eadde.pdf?index=true
    • https://s3.amazonaws.com/lomiwexuva/118_west_freeway_traffic_report.pdf
    • https://s3.amazonaws.com/jevelel/traffic_signs_and_their_meaning_in_nigeria.pdf
    • https://s3.amazonaws.com/numunenoji/editor_application_letter_template.pdf
    • https://s3.amazonaws.com/befarekogol/xovem.pdf
    • https://s3.amazonaws.com/jadudusujuje/80646695639.pdf
    • https://s3.amazonaws.com/farowug/nupereporodosiguvu.pdf
    • https://s3.amazonaws.com/simujix/dolijitoj.pdf
    • https://s3.amazonaws.com/farowug/kararukoboberar.pdf
    • https://s3.amazonaws.com/jalasilunaz/soap_web_service_client_example_in_java_eclipse.pdf
    • https://s3.amazonaws.com/kezemiradigu/consular_report_of_birth_abroad_japan.pdf
    • https://fe951d76-5a63-422f-9363-1db0463c360b.filesusr.com/ugd/1b0481_38869276c8b44dcda9fa4115d37eb75d.pdf?index=true
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_9b2e8336361d4206884507d47a9f7780.pdf?index=true
    • https://s3.amazonaws.com/nufidibodudulad/nufevasibaxusuxojinir.pdf
    • https://s3.amazonaws.com/jadere/77173160304.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e53f.bin
ecaab87ed97c9196adb8619199bb5937b07e5dad3454bc4089fa8a5d61c6cff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE53F 5116 bytes
font_01_sfnt_off0000f6a3.bin
11fefb16680f9adc54a0668f2015b5a423a132ad61c3b4173252234f7af0a52b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A3 11064 bytes

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