Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a9d6368ea08fdc5…

MALICIOUS

PDF

74.1 KB Created: 2021-03-04 21:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c806d4f9d45ee97a87f29f3e5d63306e SHA-1: b63e231746d45d863acf127ae0ab114a9f3f9a5e SHA-256: 7a9d6368ea08fdc56528c3ffcfc2cf8e14f21394de5d52428729897599161f5e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=a+color+of+his+own+lesson+plans+kindergarten PDF link annotation
    • http://mekapetakosa.22web.org/lesson_plan_about_adjectives.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://510adc33-753b-44c0-977e-8d34da8fcdd4.filesusr.com/ugd/5f4192_88f4b58137e54af9a7962f5c7af28524.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/free_avira_antivirus_for_pc.pdfIn PDF document text
    • https://69868269-04aa-4a0d-8379-1371762fd556.filesusr.com/ugd/d8beff_cb1227404a3b424bb6971455327863f5.pdf?index=trueIn PDF document text
    • https://def26600-86c9-4442-a738-094ddf2992d1.filesusr.com/ugd/eb5a6a_77cffb0e87a54e47abb87b175ce05e6f.pdf?index=trueIn PDF document text
    • https://436c154b-1c2d-4c60-9768-ed3a268ef5e1.filesusr.com/ugd/e8e253_02b9745f4c684ed2a2d24f0385281ec5.pdf?index=trueIn PDF document text
    • https://a0a5ada1-270c-452f-b092-d943fc6f0dc0.filesusr.com/ugd/306762_e9e52f4ce1d348fe8e3eefbd931ce159.pdf?index=trueIn PDF document text
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_61716584f07342bdb6c9a27e6e5be274.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zetituri/blank_connect_4_template.pdfIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_65d88cfe95ca4a44905ace39bff26a01.pdf?index=trueIn PDF document text
    • http://pibunowawoxi.epizy.com/are_champion_generators_any_good.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/dekinomovune.pdfIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_ff336ea45f7e44ca873f40ca43d56a08.pdf?index=trueIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_5364f45a20954f87b785d395702699d0.pdf?index=trueIn PDF document text
    • https://eeeff038-21f9-42a6-bde0-cd945221d618.filesusr.com/ugd/9dc459_171fcd464cba4217b2dea71acaf7350f.pdf?index=trueIn PDF document text
    • http://gigitepusiligo.epizy.com/live_stream_sports_app_android.pdfIn PDF document text
    • http://gojejamajutemus.epizy.com/printable_brain_games_for_seniors_with_answers.pdfIn PDF document text
    • http://vufosal.rf.gd/break_your_heart_right_back_song.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_off0000e491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE491 5564 bytes
SHA-256: 68d4a786c5da1b79a0e67b95e89ac43297b9c3b759fdd4c7be7e51fcc3717564
font_01_sfnt_off0000f78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78B 10420 bytes
SHA-256: fb4621bb30dddeb091c4390038fcb3a3966f9aa90b5318db430beb4af3d72272

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