Malicious PDF — malware analysis report

Static analysis result for SHA-256 217c556b3ceea84f…

MALICIOUS

PDF

93.3 KB Created: 2021-03-18 19:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 32662e9d0866873f54c60915be96e215 SHA-1: 1c630df579879fd67555b70e7dcc12ec8b8603fd SHA-256: 217c556b3ceea84f5d99490d50a9534f674b914b192ca2cc3c996aa63506585e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used to deliver a phishing page or a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to programming tutorials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://leonvi.ru/award?keyword=c+programming+language+bangla+tutorial+pdf PDF link annotation
    • https://cdn.sqhk.co/ravuviwidi/ic7lDEz/pimovewimepupatofogemozux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443292/normal_602efe075c9ef.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/8rgdheD/jisopakuju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_604fc4357707d.pdfIn PDF document text
    • http://tunizunifegitof.66ghz.com/xuxotenagowezibakafowiror.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/Bje0Poy/guide_for_dream_winner_soccer_2020_hile_indir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_603fb1bcdc25f.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/jNnjbhd/raid_shadow_legends_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366362/normal_5fcb49626ac55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_501e33678fb042f2b20bdcab05d0ba4a.pdf?index=trueIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_cc447f8c16cc4443bfb27aae12b938af.pdf?index=trueIn PDF document text
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_eb73837647054cd3bb7ae6aaf331e4c2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/timeziso/82464362450.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/what_is_involved_in_a_forklift_test.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/codycross_answers_group_15_puzzle_3.pdfIn PDF document text
    • http://zapidomaxut.epizy.com/how_to_pair_a_dish_hopper_remote_to_tv.pdfIn PDF document text
    • https://4be8a7ba-6c9a-47a4-99fc-a5961b41a404.filesusr.com/ugd/132250_be6a43571e2c4f0681b701bdcfcdddb6.pdf?index=trueIn PDF document text
    • http://xinapigakumise.epizy.com/historical_data_nse.pdfIn PDF document text
    • http://xafonabikox.rf.gd/xubijodaxeginosudema.pdfIn PDF document text
    • http://zuruwejofuxeja.epizy.com/binofexamadotirigap.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/funny_christmas_jokes_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/labitux.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF12 5228 bytes
SHA-256: 87076cdde0e6611504dea9a9381631d6b41a7a1e6c8e937f8aa06fa7dafc296d
font_01_sfnt_off000110bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110BD 16196 bytes
SHA-256: 0f2e08fd47e46174f6d28cff71e3cbcbb8417ba6b874e275abf0c9fafbd47ea6
font_02_sfnt_off000140cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140CC 11256 bytes
SHA-256: afb41ab792481bb9392dd63a9f97c2c0a8169573cdc57aa8f2f13d5267680741

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