Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec842724eba963ec…

MALICIOUS

PDF

76.6 KB Created: 2021-04-07 03:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3bafa5c3d4a041ee0d6935fe5aea42b5 SHA-1: 8e7bbc84e96b5c8382817b92372ac21eb2383e31 SHA-256: ec842724eba963ec0b3a697f9b8a5d6dcc03965a7a63b0137beba059591983b5
96 Risk Score

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 0.9997

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://midufefew.ru/wix?keyword=kickass+movies+2 PDF link annotation
    • http://itnegozio.info/bikimezumukidow6ya5s.pdfIn PDF document text
    • http://cooldomen.space/homemade_wood_lathe_stand_plansqdvnc.pdfIn PDF document text
    • http://dayzcommunity.info/45597590481nx9hh.pdfIn PDF document text
    • http://thrivewebs.com/kabebugubujizuzowaxkyr3.pdfIn PDF document text
    • http://zikemipirelojo.22web.org/hr_recruitment_tracking_excel_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://30c0d994-bee2-4d79-bc91-d4aaa7251653.filesusr.com/ugd/0962d9_1a1224c1cccc4ddfb4c3431dfe591f6b.pdf?index=trueIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_390b88f167aa47d2993f0af96b0814d3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/escape_room_answer_level_116.pdfIn PDF document text
    • http://jowimonaperu.epizy.com/chris_pratt_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/zolibugekujoxonitijowafat.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/beaufort_middle_school_uniforms.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/gararuzase.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/smart_but_scattered_review.pdfIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_ec9392c3097d4db1b4c3af7159fa923f.pdf?index=trueIn PDF document text
    • https://24218389-b518-4ca3-8548-65eaf758daa4.filesusr.com/ugd/c836c3_b73e9added504971ba4a7399766c452a.pdf?index=trueIn PDF document text
    • https://2e6726a7-2e78-456a-9fa1-8bc85c3b20a6.filesusr.com/ugd/76e31d_c470305cab1044b8bfb2ee0bef846b00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukujidor/71449331166.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_a76d9ec7a1a549f8b1282dfb92de0dad.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/cholesterol_diet_sheet_nhs.pdfIn PDF document text
    • https://d1ee23ee-9ccf-45b0-80ef-1e1ff1f657c4.filesusr.com/ugd/9ef0c3_13dcd5d10943496792abcc39f29d8902.pdf?index=trueIn PDF document text
    • https://a49a6154-edc8-4132-95a2-c7bb8d673fe9.filesusr.com/ugd/551169_fcec98a7005f4fcfa816c341e24398db.pdf?index=trueIn 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_off0000eb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB58 5040 bytes
SHA-256: 96f654a8134e1c574349c12f7a266b4fdaea2159a5d6b5daf305d00b1fd8d3a0
font_01_sfnt_off0000fc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7E 12068 bytes
SHA-256: c42c5bda5cd6f8523e25e38677405f2be9312adc1e3b799a37658643ef043efb

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