Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c61093ab14dc76…

MALICIOUS

PDF

84.7 KB Created: 2021-05-24 07:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a53c76f0b0cc33afde5928e35de33b84 SHA-1: a5bfa76bd68161f36358f1995f25b240594701f1 SHA-256: d3c61093ab14dc76558451abbed5eba7abed8a09a6f607900e2d2559693672e6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when combined with the document's text, suggests a lure for downloading an application. The presence of an external URI points to a potential download or redirection to 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://ponafet.ru/strik?utm_term=mini+militia+wall+hack+god+mod+apk+download
    • https://cdn-cms.f-static.net/uploads/4386828/normal_604ca3997be35.pdf
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5fda3978e045f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/geraromu/gutifugedisejubabife.pdf
    • https://uploads.strikinglycdn.com/files/34fb555a-e593-4b99-a6d4-90a6d6a95139/15747914659.pdf
    • https://s3.amazonaws.com/pazatuv/hp_officejet_8600_plus_driver.pdf
    • https://s3.amazonaws.com/wulagisi/english_conversation_18.pdf
    • https://s3.amazonaws.com/dazinibonofobi/94104070366.pdf
    • https://uploads.strikinglycdn.com/files/23667f2c-3a4b-461e-8fc1-827b3e3df66b/how_to_study_effectively_in_dental_school.pdf
    • https://s3.amazonaws.com/lovomijelun/bijevovezumolijebasofuwe.pdf
    • https://s3.amazonaws.com/jifesu/manasquan_school_district_salary_guide.pdf
    • https://s3.amazonaws.com/vabedafozo/nisaxubadadubo.pdf
    • https://s3.amazonaws.com/remufuzu/46298380868.pdf
    • https://s3.amazonaws.com/juzowilipi/bigexurutoreze.pdf
    • https://s3.amazonaws.com/viwoxuz/70269882570.pdf
    • https://s3.amazonaws.com/temujonuwu/general_electric_distribution_transformer_manual.pdf
    • https://s3.amazonaws.com/xeruxaxer/64543384308.pdf
    • https://s3.amazonaws.com/paxunu/latest_ielts_listening_practice_test_with_answers.pdf
    • https://s3.amazonaws.com/dobikasukavu/pupifotumiliwudir.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e939.bin
2994b144144782b359975369544aa2e0abd57c872a3292b61d65d5ae5990df3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE939 5376 bytes
font_01_sfnt_off0000fb77.bin
4b7208fd88eac83b987606676f6e452a2332fcfddb043ef5e0cd67b4a58fc4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB77 10776 bytes
font_02_sfnt_off000120a8.bin
069f5cdcb972b33999f3dc18a3e5b847fc2aa024b7c5b45b4734cedf253a8e5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120A8 16376 bytes
font_03_sfnt_off0001368b.bin
cc99415ba9fe95474c4596b2db58d03229def8d1fd10eff0cc4620ec1a387f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1368B 3816 bytes

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