Malicious PDF — malware analysis report

Static analysis result for SHA-256 4640e746ce803572…

MALICIOUS

PDF

72.2 KB Created: 2021-04-08 02:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de9ff53585e4dca9ea293f31ed6092be SHA-1: 238b080e19b862d795866eae4eb89bd44ddebf61 SHA-256: 4640e746ce80357211cc3f3e45fa98b97f15c60f00397f5c4cc8118268656a82
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=worksheet+doppler+effect+answers
    • http://dk-inc.xyz/manualidades_hechas_con_carton_de_huevoscthzj.pdf
    • http://load-bcp.com/project_management_risk_assessment_formk0zwe.pdf
    • http://daimontimur.org/get_google_maps_on_iphoneeo520.pdf
    • http://pro-komp-master.website/354764815232tp24.pdf
    • https://cdn-cms.f-static.net/uploads/4414486/normal_6039f2ca8b658.pdf
    • http://sks-expertiza.ru/what_is_in_chick_fil_a_waffle_frieseu8j6.pdf
    • http://winovigamaj.mygamesonline.org/how_do_you_measure_learning_outcomes.pdf
    • http://good-production11.site/tojotitawanawgqrix.pdf
    • https://cdn-cms.f-static.net/uploads/4383797/normal_60174e0d305c5.pdf
    • http://50off.pro/metal_gear_solid_2_sons_of_liberty_substance_differencei35o6.pdf
    • http://ig-verifiedsbadge.com/how_to_start_a_topic_essaycq3ky.pdf
    • http://feremujidonigu.getenjoyment.net/41304651845.pdf
    • https://static.s123-cdn-static.com/uploads/4427529/normal_6005844c239f3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sagoralezerelo.onlinewebshop.net/scrabble_board_game_instructions.pdf
    • http://jegafat.rf.gd/wavizipotibusajuveniwu.pdf
    • http://besinaxot.epizy.com/what_bible_says_about_single_mothers.pdf
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_717dc023743a4089921175dbf70cb985.pdf?index=true
    • http://nanaxidimidi.atwebpages.com/what_are_the_theories_of_language_acquisition.pdf
    • https://1a447ccf-a6a5-490c-ad31-399ae8169532.filesusr.com/ugd/cf5184_dc4494738f5140638bf0ae28b9432811.pdf?index=true
    • https://4993f9ff-345c-4c03-a8ec-d4f8dac664d6.filesusr.com/ugd/debbe1_7ac16181e4da4851a3026c6065cd6b36.pdf?index=true
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_72185251ba08456787a01abd7722d15c.pdf?index=true
    • 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_off0000de10.bin
08c87af6282aebaaf1f7d7981a9488b80ae12532cbd1164829d32926080cf30c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE10 5412 bytes
font_01_sfnt_off0000f091.bin
c0d3ce8103782e18e847b10ee9596d50174e569fc36c8e3fd4ad6adfb5054d7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF091 10204 bytes

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