Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c2df1a9f720265…

MALICIOUS

PDF

86.5 KB Created: 2021-05-20 07:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 1f9dc17a459e7f09e38040ea760bc48e SHA-1: 56af2d02b54a344ba39b40e78e5b6f5b3294da41 SHA-256: 49c2df1a9f720265867a5c66fd501c20d8b4b3255162f8cbab7ebfa6a949d341
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though partially garbled, contains a question that could be used as a lure to encourage users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/strik?utm_term=cuantos+pies+hay+en+1200+metros+cuadrados PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4530429/normal_6024c9599ebf7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446635/normal_5fcd76b138a9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486359/normal_5ff0c05e5395c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484364/normal_6013740a2607f.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/mawesenasijoser/dotedogoxekupexav.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/voxebaxurizubogig.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/moon_river_chords_frank_ocean.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/flute_quartet_sheet_music_musescore.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/hoover_windtunnel_central_vacuum_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/98257672883.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/chucky_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/donebegapadaw.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/87458970559.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/nixejurube.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/ragibakejanoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/android_17_mir_ranger_shirt.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/cag_full_form_in_audit.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/proyecto_tecnico_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/guitar_tabs_hindi_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/xizegufupudarapoje.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/bissell_proheat_2x_revolution_pet_pro_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/how_do_i_learn_computer_programming_by_myself.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_off0000fbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 5612 bytes
SHA-256: 16332102b03db239f23e4942cd9fa7ef8292d490f3395a83f00e1517d888cea4
font_01_sfnt_off00010ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC2 12108 bytes
SHA-256: 09de43f2f293c625626717ad72aa3dd402e6dd4fca867b27b30a410a00a4a242
font_02_sfnt_off000135ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135AE 16100 bytes
SHA-256: e8be64a599b4775abf69106d1ea2a605297721d8ccc8071fb3d67c702b09cfa6

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