Malicious PDF — malware analysis report

Static analysis result for SHA-256 9646abe02558fedd…

MALICIOUS

PDF

77.7 KB Created: 2021-02-16 22:39:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 108ef01c55a9772a6f2ad75bc1a75414 SHA-1: e63b7126afe6c3b4137cb07864c97257682136ae SHA-256: 9646abe02558fedd3df65cb8f4c69e3cdfbb4a9959395cce105f0bf641b64db3
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, masquerading as educational material. ClamAV and ML classifiers strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=photosynthesis+worksheet+middle+school PDF link annotation
    • http://mugisawitunolaf.iblogger.org/wejewuxajulukik.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/gcgjdxN/the_you_testament_the_2d_coming_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/gasukatebu/KQ9tjii/sprinkle_island_mod_apk_unlimited_water_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/jBsjbid/cube_escape_paradox_walkthrough_globe.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/heiigeQ/28509859341.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/netinuwa/2016_chevrolet_impala_ltz_manual.pdfIn PDF document text
    • http://pusonuduwixi.epizy.com/stihl_ms310_chainsaw_price.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/jisatexinovidufak.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/54801577330.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/animals_hollywood_tamil_dubbed_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/36848894354.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/http_bssc._bih._nic._in_admit_card.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/kojegonovepoluxarisaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/tuition_admission_form_format_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/plane_and_solid_shapes_worksheets_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/24155061151.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/78987211224.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/conjugated_form_of_avoir_in_french.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/osmosis_lab_report_discussion.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/26212499256.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF176 5228 bytes
SHA-256: b586cebf7902c58667b0ae76ae848825a3ae21c5dd898e12e17d04da16ce74eb
font_01_sfnt_off0001032d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032D 11324 bytes
SHA-256: 912da3e9007970278c999be9565f6bdfa96905693d673125592121073d759223

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