Malicious PDF — malware analysis report

Static analysis result for SHA-256 437144dddd27a932…

MALICIOUS

PDF

77.3 KB Created: 2021-01-19 00:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f44ae9fa0dc5d0e6ca1c8a136acf9e98 SHA-1: 830cee1deec765b98a79f56d6f5f1765b542bc68 SHA-256: 437144dddd27a932fc852dc474a99c021bfe5d930c5b212fee92eb06b3544c4a
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URIs strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/123?utm_term=astrid+carolina+herrera+hija PDF link annotation
    • https://cdn.sqhk.co/gozafavapawu/eiggaNM/jezovizulodasabur.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/tjjifhe/20426688753.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/JsuHjgV/carmageddon_2_carpocalypse_now_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/ioFqigH/shelterlogic_shed-_in-_a-_box_6x6x6.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/iemthgj/allo_allo_cast_where_are_they_now.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/ggibKDW/roku_account_cost.pdfIn PDF document text
    • http://gulebamabixaku.22web.org/wobble_line_dance_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kukojuvata/jbhfGgi/download_hillside_drive_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/wedegetuso/Pheesif/60295086969.pdfIn PDF document text
    • https://cdn.sqhk.co/sozasusu/ihhcjdn/5471631834.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/6fwkIC2/vovexunewuvis.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/fejififimaketo/fetal_growth_and_development_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/mofiderasu.pdfIn PDF document text
    • http://pasigajixivete.epizy.com/whatsapp_status_song_sohnea.pdfIn PDF document text
    • http://lekowezitodog.rf.gd/463149564.pdfIn PDF document text
    • http://rolaxaja.rf.gd/83407519889.pdfIn PDF document text
    • http://roduteberilexel.epizy.com/9562390560.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/xebixenebi.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/zozuwaretafetevafimeb.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_off0000f15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15D 5092 bytes
SHA-256: 7e89e72a90576306ad8570539dcb312f4eaf5c13b78263545856b613ccc6e0db
font_01_sfnt_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 11384 bytes
SHA-256: 32e400d76cb537e278f75dfbcb5e30263ec3c1cbe83cd47521a02fe0b9dcc834

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