Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e7f862f739e33d…

MALICIOUS

PDF

68.5 KB Created: 2021-02-12 07:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c3976b7c0a145b1393bce7ef28125288 SHA-1: d8ab961f7c8a12853801845f8eac7f5257cc4ee5 SHA-256: 19e7f862f739e33d1e556a97b98124ff6f970da89ed331381a55939923cf2006
96 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ML classification and ClamAV, with a high risk score. It contains an embedded URL that appears to be a lure for downloading Android game APKs, suggesting a phishing or malware distribution attempt. The PDF structure and the presence of external URI heuristics indicate exploitation for client execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/wb?keyword=ben%2010%20games%20apk%20for%20android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4428083/normal_5fec2d8dec96a.pdfIn PDF document text
    • http://voduvalegef.66ghz.com/becoming_a_good_leader.pdfIn PDF document text
    • http://3203epworthcres.com/playmobil_victorian_mansion_instructyg5nf.pdfIn PDF document text
    • http://normal-id.com/quality_go_launcher_theme_wallpaper_apkaoe0a.pdfIn PDF document text
    • http://vobigabifinu.22web.org/94658188410.pdfIn PDF document text
    • http://b0xberry.online/fikinagifa6963g.pdfIn PDF document text
    • http://g2am2e.xyz/free_standard_uk_employment_contract_template2run2.pdfIn PDF document text
    • http://aycotoro0.xyz/cancer_free_bookbfczr.pdfIn PDF document text
    • http://neo-tp.ru/bs_ohsas_18001_espaolmjy2t.pdfIn PDF document text
    • http://dwatches.site/addams_family_pinball_machine_australiaoyhrp.pdfIn PDF document text
    • http://avit0.cc/fortnite_installer_apk_awardd8260.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/zafijukopa/texujemexeruxe.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/1489854342.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/biotina_para_cabelo.pdfIn PDF document text
    • http://dolufin.epizy.com/nesidawaminer.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/wonanoxirabaxezejasapu.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/creta_2018_brochure.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/types_of_horn_antenna.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/can_t_sleep_k_flay.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/55317671356.pdfIn PDF document text
    • http://xutakubu.epizy.com/pamijitivesivadisomok.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/calico_critters_school_uniform.pdfIn PDF document text
    • http://xiwaresijo.epizy.com/21659639461.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_off0000ca36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA36 5636 bytes
SHA-256: 9043130cb42edb03478c878aa2da307f47bb03b5bd503a0a19851345b5d8d201
font_01_sfnt_off0000dd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5E 11596 bytes
SHA-256: 2c4731512258191cb89bc49f52224180ff6877ece26caa35d1a4f617fcd7db2f

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