Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c15e59071e6b2e…

MALICIOUS

PDF

84.3 KB Created: 2021-01-02 14:46:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9454262839594bb54a73bd82153a8b34 SHA-1: 86ef0f6d5041d1e81f9ef8d57703326ad396647f SHA-256: 84c15e59071e6b2e5b5a85e66a6b794bdad2b615bbcb899d99f054266fef819d
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL and numerous other URLs suggest a phishing or credential harvesting attempt, masquerading as search results. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to infer a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/wb?keyword=the%20outer%20limits%20o.%20b.%20i.%20t.%201963 PDF link annotation
    • https://cdn.sqhk.co/tukawezezo/XqqQHkm/the_escape_story_walking_stranger.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/ZXYjVcN/vikonurukibamovujus.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/xjb6jbs/emoney_advisor_customer_service.pdfIn PDF document text
    • https://cdn.sqhk.co/kafevinuva/bjjIX0b/skin_colored_mole_on_face_bleeding.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/fjhtWmN/59683146162.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxovunevo/njjUhhv/city_jogger_double_stroller_car_seat_adapter.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/jh4MoLt/matchington_mansion_hack_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/ichi4ja/sutiwazuwexomoramomebe.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/sixolose/kunukolodowulukafubima.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/avast_antivirus_free_for_cell_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/fewapopuvupom.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/24844692751.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd2c8acd-3965-450f-a580-fc1af5fc64a6/missing_persons_report_24_hours.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_off00010dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEA 5360 bytes
SHA-256: ce247cc5572d2cc7442c499f9802a265e6d1d1f52d5929e6fcc79fba2a0b2684
font_01_sfnt_off00011ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF6 10504 bytes
SHA-256: cfe93ccf7b3f08764f0cd6d53d6645f67635810dd1e236698aaa9368d42a9d8f

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