Malicious PDF — malware analysis report

Static analysis result for SHA-256 056b25da5fa3c5d8…

MALICIOUS

PDF

78.0 KB Created: 2021-03-30 17:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1ecefcddd78456f213acbb29500a842b SHA-1: e3489ffcd38ebeb371f72a0eebc47c193fbe78c3 SHA-256: 056b25da5fa3c5d89635048e3fef317840cb7ba3e41a5cd9c19c7ebbaaa14f26
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/award?keyword=bakal%25C3%25A1%25C5%2599sk%25C3%25A1+pr%25C3%25A1ce+pdf+muni PDF link annotation
    • https://cdn.sqhk.co/liralimujote/iHgjjib/advanced_systemcare_latest_version_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/j612669/bubble_pirates_bubble_shooter_bird.pdfIn PDF document text
    • https://cdn.sqhk.co/xizubutagen/jbjehg5/episode_choose_your_story_download_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/Yyicihg/autonics_panel_meter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377101/normal_602f1242e6bc9.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/65200819422.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/8th_grade_vocabulary_list.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/halong_bay_map.pdfIn PDF document text
    • https://cdn.sqhk.co/kifavubivelo/diaghhj/28784256131.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_600fd38877891.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/hAhesdQ/brain_test_tricky_puzzles_online_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_601c783a9bb57.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/aijdXig/flower_garden_designs_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/LfhhoHJ/unnatural_causes_bad_sugar_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479470/normal_600ce6ddd2f52.pdfIn PDF document text
    • https://cdn.sqhk.co/kezomerameki/ieogdhb/stock_market_tracking_app.pdfIn PDF document text
    • https://cdn.sqhk.co/sotatixorawi/gfiiBb5/kefobalu.pdfIn PDF document text
    • https://cdn.sqhk.co/bibobovezave/jiCIjdR/wild_kratts_rescue_run.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/kukupunopedon/fluke_707_loop_calibrator.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/40184731061.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/71574090706.pdfIn PDF document text
    • http://jowokepo.atwebpages.com/princeton_review_sat_practice_test_4.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/11552426596.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_off0000ee51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE51 5776 bytes
SHA-256: c85d1cb023d592d63b490aff714f922d466c852f602d122e7e4ea97f7c1fb834
font_01_sfnt_off00010129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10129 13204 bytes
SHA-256: a351c3954bbb11722397985ee278fc67e86130bfac72f45585ed9e85ba0c1f6a

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