Malicious PDF — malware analysis report

Static analysis result for SHA-256 7143dff5d4751d58…

MALICIOUS

PDF

85.2 KB Created: 2021-02-21 20:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8270a0c4e8153126b86454148ccc26a0 SHA-1: 70a091d19385c0404da96939172a75ed38de4c32 SHA-256: 7143dff5d4751d588aa5e11c4fa411c8d7f642f1dfab00ebb919da95ceb40fe1
132 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. Heuristics suggest the document uses urgency and payment lures, consistent with phishing or scam attempts. The embedded URL, https://seumenha.ru/aws?utm_term=how+do+i+reset+my+verifone+terminal, is the primary indicator of compromise, likely serving as a redirect to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/aws?utm_term=how+do+i+reset+my+verifone+terminal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426072/normal_5fca4749aac43.pdfIn PDF document text
    • http://tagarubame.22web.org/dell_latitude_e7450_wont_power_on.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408323/normal_5fdc9d50ad0f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_600f373c7ddd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460048/normal_6000151c21aad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371014/normal_5ff9508248869.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465125/normal_600a7b980e282.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/dumupa/manual_brain_vision_analyzer.pdfIn PDF document text
    • http://tipesirufig.epizy.com/ligiwenulanukevazumosuba.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/global_competitiveness_report_weforum.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/78881241217.pdfIn PDF document text
    • http://lejaget.epizy.com/calorie_counter_app_android_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/pijelugenumafusasuzabemun.pdfIn PDF document text
    • http://wokeben.epizy.com/wazaduresijimitoka.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/identify_synonyms_and_antonyms_worksheet.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/cbse_2020_10th_exam_date_sheet.pdfIn PDF document text
    • http://ravimerafewede.epizy.com/miviwubufobi.pdfIn PDF document text
    • http://karifopiti.epizy.com/37045267336.pdfIn PDF document text
    • http://podixisuxusajez.rf.gd/how_to_get_rid_of_mildew_smell_in_top_load_washing_machine.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58F 5268 bytes
SHA-256: 8231e17a1a1f642ccbb1c46540a9de31f803436950498c39690b326c4beff141
font_01_sfnt_off0001077d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077D 12688 bytes
SHA-256: 202c9fcf82afe35fe86beeb46263147d59e326161608099d87da3b8a016b8e08
font_02_sfnt_off000132b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B1 16072 bytes
SHA-256: e02a88d9599712d873514dbcec8653059ead18a1e44b795828ff7943e65f13a1

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