Malicious PDF — malware analysis report

Static analysis result for SHA-256 20356249ecacb5ca…

MALICIOUS

PDF

71.3 KB Created: 2021-03-29 05:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b4cdbed5d5f5d76f9709f46f4780dc4e SHA-1: 7f7a09c95559964787ca7955ae1dbaf6538e18a7 SHA-256: 20356249ecacb5ca8af94b156be612f210e8e738d09df720aa84a9f3c29f2837
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, which is likely a phishing or malware distribution URL. The heuristic 'SE_URGENCY_LURE' suggests the document's content attempts to create a false sense of urgency to prompt user interaction. No scripts were extracted, but the presence of external URIs and the overall malicious classification indicate a likely attempt to deliver a payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://leonvi.ru/award?keyword=diphenoxylate+with+atropine+davis+pdf PDF link annotation
    • http://xafesuvorolivig.scienceontheweb.net/easton_s_bible_dictionary.pdfIn PDF document text
    • http://wafijazaxubot.iblogger.org/30412147090.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5ff6aadcd1327.pdfIn PDF document text
    • http://nitiwopororotef.mypressonline.com/26842365915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_5fd7aa896be85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411001/normal_5ffec22312c0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_6056760045b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_5fd3cf96e313f.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/vovuzize/2004_kawasaki_vulcan_nomad_1500_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/background_images_free_for_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/85605310021.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/jayanagar_weather_report.pdfIn PDF document text
    • http://xumurofujidal.rf.gd/apostolic_school_of_ministry.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/lesimasorul.pdfIn PDF document text
    • http://somifinufax.rf.gd/94197472357.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/gezafo.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/agile_roadmap_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/tixefupogiwatatope.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/blanqueo_internacional_de_capitales.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/41034697821.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/free_printable_residential_lease_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/absolute_value_equations_inequalities_review_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/metals_and_nonmetals_class_10_questions_answers.pdfIn PDF document text
    • http://kojoduperoko.epizy.com/lajujenawunalemaju.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/free_willy_3_the_rescue_trailer.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_off0000d943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD943 5452 bytes
SHA-256: 17aa19d5df67fd5de35dfa1e7c4b79d800c3378c8796aaeb36738e308c893231
font_01_sfnt_off0000ebeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEB 10720 bytes
SHA-256: 28becf1736217e5afecbfcccd0d8b1145d33cfc08bccc1ffa4daff9ba6010481

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