Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf2ca509eeb9150…

MALICIOUS

PDF

107.7 KB Created: 2021-02-19 16:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 3e1e68933b4867a7313383cc18d3a88d SHA-1: 4a61ea9d80ef9c558c7077535c9b7701bac6b543 SHA-256: aaf2ca509eeb915042844e06217c145412e9cb015eae03e716c4e1e7a833941a
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, contains text related to a search query, suggesting a lure to entice users to click the malicious link.

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://jacksth.ru/wix?keyword=elementary+principles+of+chemical+processes+solutions+chapter+4 PDF link annotation
    • https://cdn.sqhk.co/xopuxuvop/idjcEcs/lamedekufipanabig.pdfIn PDF document text
    • https://cdn.sqhk.co/dimowitop/FmejiEQ/redbooth_task_project_management_app.pdfIn PDF document text
    • https://cdn.sqhk.co/zirimikuj/bcjfUic/39537555456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527357/normal_602543ef0561b.pdfIn PDF document text
    • https://cdn.sqhk.co/jagugide/jwhcvPp/high_school_football_referee_hand_signals.pdfIn PDF document text
    • https://cdn.sqhk.co/zofagopipowi/Mggjbgc/real_followers_for_instagram_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478133/normal_601b8acb2775c.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/bZhehew/lufubox.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/hgiiuhd/attack_the_light_apk_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448094/normal_6007d92baaa6b.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/hdhbfie/kabozilurapaxizo.pdfIn PDF document text
    • https://cdn.sqhk.co/kipaselofuza/fDvhexC/fosajobumuwibef.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/bidurudilidujug/cisco_ise_user_guide_2._2.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/feliz_navidad_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/cronograma_de_projetos_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/motulubotamafevuge.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/32541184573.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/reported_speech_exercises_b2_level.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_off000144f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144F6 5400 bytes
SHA-256: 975efcd35b59b82a2a87eafd2d09dba0cf120e6fbd9b423f3e36491358afed4a
font_01_sfnt_off00015732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15732 15732 bytes
SHA-256: f970d278eb77e557f0af395856a500c8ea2aa19107e26337dd084d27d6fd3453
font_02_sfnt_off00018828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18828 16916 bytes
SHA-256: ebb018736a8cd4b2175154fc611d877a4b0d54a98254650a67ff13e0f7923b3d

Open this report in the interactive analyzer, or submit your own file for analysis.