Malicious PDF — malware analysis report

Static analysis result for SHA-256 9397c6d19a422eca…

MALICIOUS

PDF

184.7 KB Created: 2021-03-25 15:23:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0c9e82a78a1fb249f4d2ef54daf3f500 SHA-1: 11afc27970c6216bf2ab538f5d2506832e4cb233 SHA-256: 9397c6d19a422ecaa8b78272d43ef86cda16c69c03ec9e67cbf7ddc94914165c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that mimics a search result for a study guide, likely to trick users into downloading further malicious content. No scripts were extracted, but the presence of external URLs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://golowaki.ru/wix?keyword=dante%2527s+inferno+study+guide+pdf PDF link annotation
    • http://xemokajoled.medianewsonline.com/52012540017.pdfIn PDF document text
    • http://pevewoxoxup.scienceontheweb.net/3rd_grade_math_teks.pdfIn PDF document text
    • http://kadanijojabuf.mywebcommunity.org/insinkerator_pro_333.pdfIn PDF document text
    • http://witaxolexigabi.mywebcommunity.org/kigejaralape.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/KgjOihw/heroes_war_counterattack_english_apk.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/caso_clinico_cirrosis_hepatica.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368767/normal_5ffe87ce7d00c.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/f1KhfFe/jigozin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459636/normal_5fd68cfe9e124.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/how_do_i_reset_my_toner_chip_xerox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451929/normal_60055ec1bf331.pdfIn PDF document text
    • https://cdn.sqhk.co/gimenuxot/XSmjiie/among_us_cheat_skin_and_pet_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424349/normal_5fefbdbd94e6c.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/jenisozazewubo/autismo_scielo.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/tevumanaredanolaf.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/puxijoburufosatizatexetej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/321d967c-dffc-40f5-8de1-704a635baacb/miniature_dachshund_puppies_for_sale_in_north_georgia.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/how_to_solve_number_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c25add7-abbe-44b6-a24c-c0d8c1925a5e/notaborogiwimanop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b68ae0-dbe6-4e63-b3bd-90a797a131b4/25807468893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cba1d42-441f-45c5-8749-782ad72f57c3/9._menciona_4_formas_de_comunicacin_oral.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/berlin_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3ba4107-f625-4a3d-94c8-c5f2a083076f/dazanuwulozuveke.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/mickey_s_malt_liquor_bottle_cap_answers.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_off00029a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A33 5312 bytes
SHA-256: 9550fdbf624f334f92abbf9a522c3002b9ee67a6f6a163c3783b1065447a2350
font_01_sfnt_off0002ac6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC6F 12388 bytes
SHA-256: 2b8fb66c3a9a2d0ed9c44e4925c2fbc16c4fa2babac4035e310615b5dbf14d2d

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