Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ee19273c336059…

MALICIOUS

PDF

71.9 KB Created: 2021-03-16 00:38:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e03a86c0ec87ca6bd4eeae10e5bacc4b SHA-1: ba1dd6da6649179b777efe042c7f7998961d4a4f SHA-256: 70ee19273c336059fd0051a9071de472fd14597a5791cd37427fc59d6a7bef73
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse for malicious purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dafemum.ru/wix?keyword=curio+shop+guide
    • http://genokoti.iblogger.org/how_much_does_a_large_sweet_potato_weigh_in_grams.pdf
    • http://tularafujebok.iblogger.org/agent_vinod_movie_songs_pagalworld.pdf
    • https://xanilavobug.weebly.com/uploads/1/3/5/9/135959945/44f434503.pdf
    • https://pokasejazutiz.weebly.com/uploads/1/3/4/4/134447431/latono_zovov_gopesofululakuw.pdf
    • https://cdn-cms.f-static.net/uploads/4447250/normal_602ac8df2484c.pdf
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5ff3c82d026ca.pdf
    • http://xebepadizupen.22web.org/surya_atharvashirsha_sanskrit.pdf
    • http://palejep.22web.org/pajugarigewebezuronar.pdf
    • https://cdn-cms.f-static.net/uploads/4481056/normal_5fe7c2ca17bc0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jupevuxirapi/wipagenidekavaroxefame.pdf
    • https://s3.amazonaws.com/savifin/41152634809.pdf
    • http://lelupiborojez.epizy.com/artistic_fonts_for_logo_free.pdf
    • https://s3.amazonaws.com/xufaxoferugod/39826727961.pdf
    • http://bibarixe.epizy.com/assistir_globo_reporter_ultima_sexta_feira.pdf
    • https://s3.amazonaws.com/zamuriza/23210163108.pdf
    • https://s3.amazonaws.com/sesijesule/teleological_argument_essay.pdf
    • http://galakekev.rf.gd/21426523990.pdf
    • http://jisixapuwalim.epizy.com/weekly_math_homework_answers_6th_grade.pdf
    • http://zirikefemeto.rf.gd/medical_tourism_in_developing_countries.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e027.bin
707c3dd6e03bfd5ee74d3a00ac9e3bfdf8784cebe2a6251f44f14f3e9dba66cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 4884 bytes
font_01_sfnt_off0000f0bb.bin
bba799de253b786f9cca04a136304362ba8e49ade7a6fdb7f305c3b559d15a08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BB 9940 bytes

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