Malicious PDF — malware analysis report

Static analysis result for SHA-256 77292bb96f180141…

MALICIOUS

PDF

83.5 KB Created: 2021-04-23 08:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5e27451fa63a6f43971aefbdaccb3f50 SHA-1: 7bbb0314ba0b5b07cb5f04c6084e2585644b5ee1 SHA-256: 77292bb96f18014157f2dc74cb2dd42dc3aacedead019b162ca4c5c1c894f48b
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 URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to academic content, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=precalculus+with+limits+a+graphing+approach+third+edition+answers PDF link annotation
    • https://cdn.sqhk.co/poronujefino/heCZHcN/simple_sandbox_2_anti_cheat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530910/normal_601199d01d4fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486566/normal_5fc5adc626a88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485704/normal_603208a89dee3.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/Gogh1dL/wifekitelijufoke.pdfIn PDF document text
    • https://cdn.sqhk.co/wabasenenem/Jt2hagj/mp3_download_music_downloader_song_player.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488592/normal_5ff2fff9ce515.pdfIn PDF document text
    • http://melowew.scienceontheweb.net/mcdougal_littell_algebra_2_practice_workbook_answers.pdfIn PDF document text
    • http://putifid.iblogger.org/gasunojizatuzedarumavurew.pdfIn PDF document text
    • http://fudutotiv.iblogger.org/syllabus_of_bank_clerk_exam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477626/normal_5fcacbffa72df.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/czjjdgg/cheap_funny_race_car_shirts.pdfIn PDF document text
    • https://cdn.sqhk.co/wifuponi/hXgcjgw/zigozuvaw.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/rutufokedizon/7880715521.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/count_zero_records.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/tupirofibad.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/business_productivity.pdfIn PDF document text
    • http://tatifamajerub.epizy.com/bioavailability_definition.pdfIn PDF document text
    • http://mopawok.epizy.com/ell_word_family_worksheets_for_kindergarten.pdfIn PDF document text
    • http://tosijikis.onlinewebshop.net/pupineb.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/likiz.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/37803657945.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/blackboard_collaborate_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/witcher_3_hearts_of_stone_trophy_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/12930836973.pdfIn PDF document text
    • http://waxuvab.epizy.com/dojagefukuvezifavakajela.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_off0001088c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088C 5580 bytes
SHA-256: e779c10b44b5cc52006b4b19cf7873e72ac6ca0a613a4fd759e05857ead6fa8a
font_01_sfnt_off00011b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B68 10668 bytes
SHA-256: 5daa907c55c9f0eebd6615f733199fa57118dd625d2699a07ecd8354dc1fb822

Open this report in the interactive analyzer, or submit your own file for analysis.