Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be05c1b758853fb…

MALICIOUS

PDF

81.6 KB Created: 2021-03-13 12:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f19d8f8ef5bf9e485f381c9d122cd218 SHA-1: 5c1f9cd180361a81bcb7d6b66e4f90291639626d SHA-256: 2be05c1b758853fb54e8bb8c2a1be7760ea4478911b2d772d4fe1ccc5e98e411
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier returned a high probability of maliciousness. The document contains an embedded URI pointing to a URL that appears to be a search result for downloading the Orbot TOR APK, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of the malicious URL is a strong indicator of malicious intent.

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://maypoin.ru/wix?keyword=orbot+tor+apk+download
    • http://naturelofo.mypressonline.com/mapa_transporte_bruselas.pdf
    • https://cdn.sqhk.co/pobumepova/lRjb1nC/proloquo2go_switch_scanning.pdf
    • https://cdn.sqhk.co/zebenane/j8vjjii/amazon_assistant_manager_hourly_pay.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://liwetagosozel.onlinewebshop.net/padadilo.pdf
    • https://s3.amazonaws.com/takurugilij/caboolture_train_line.pdf
    • http://gabukinof.epizy.com/how_to_write_a_rhetorical_analysis_introduction.pdf
    • https://s3.amazonaws.com/davawina/company_fact_sheet_template.pdf
    • https://uploads.strikinglycdn.com/files/77d22793-44b8-4a09-9dc4-2badb5e873b6/reddit_cmv_cats_are_better_than_dogs.pdf
    • https://s3.amazonaws.com/xamapebonijos/33976738850.pdf
    • https://s3.amazonaws.com/bewibiwat/functionally_active_form_of_vitamin_d.pdf
    • https://uploads.strikinglycdn.com/files/9413f41b-8c83-4b9d-9cb1-7ce0b46beb12/80871534034.pdf
    • https://s3.amazonaws.com/jijumupade/81084342377.pdf
    • http://wepikupovug.myartsonline.com/3431007022.pdf
    • http://jedikofip.rf.gd/whirlpool_wrf560seym00_manual.pdf
    • https://s3.amazonaws.com/papuja/crystal_report_runtime_13._0._0._99.pdf
    • https://uploads.strikinglycdn.com/files/327c23dc-40f9-4b0e-8fce-be7284c3e299/sasazikatoxukuk.pdf
    • https://s3.amazonaws.com/remuv/jane_eyre_oxford_bookworms.pdf
    • https://s3.amazonaws.com/gozifep/kibikevefosidog.pdf
    • https://s3.amazonaws.com/minegikukovel/chalkboard_menu_template_word.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eac9.bin
060de987fdfc076942fe7a60237181ebcf7ac8aba987e268ae556c17d08dc0a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC9 5100 bytes
font_01_sfnt_off0000fc3c.bin
7cee96fb0217cfff612325021a964df37ea3dd4982ab7118d9be520532cb9ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 11460 bytes
font_02_sfnt_off000123ab.bin
06b6d92114adeda75af3f96122d26ce5b75c0c67043a3966fe4e60826377f072		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123AB 16264 bytes

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