Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50738cc00519e94…

MALICIOUS

PDF

73.2 KB Created: 2021-02-12 21:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7b9389e2f271cf1dab80b869d3ae73c SHA-1: 74526b5029974d19b833cc50cdb2c6325cc9f10f SHA-256: d50738cc00519e94b11af237453315ba2519cb3316c993546da7bcb4997d11f5
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://bologen.ru/wix?keyword=escaping+the+prison+newgrounds PDF link annotation
    • http://osthondroz.com/dozalakukuxuzo87k.pdfIn PDF document text
    • http://fruittea.space/opencv_text_detection_c_examplecp165.pdfIn PDF document text
    • http://astrohelp.space/betitowimobozgkt73.pdfIn PDF document text
    • http://f1l3download.site/common_themes_in_children_s_literaturesa3r0.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/6aZidtU/runadewesidet.pdfIn PDF document text
    • http://interstart.online/ot_word_family_worksheets_for_kindergarten5yjq0.pdfIn PDF document text
    • https://fukaxoxatu.weebly.com/uploads/1/3/1/4/131438517/44b31fce.pdfIn PDF document text
    • https://janepaxe.weebly.com/uploads/1/3/4/0/134097288/247119dd.pdfIn PDF document text
    • https://cdn.sqhk.co/mirofifuba/81xMgh1/tales_of_crestoria_characters_tier_list.pdfIn PDF document text
    • http://supportcopyright.net/hakuoki_edo_blossoms_saito_cg8y5bz.pdfIn PDF document text
    • http://zelopaqq.xyz/saoti_arewa_latest_musicyifm4.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/SgfHUkU/my_arcade_retro_pac-_man_handheld_gaming_system.pdfIn PDF document text
    • http://devlp.design/stalker_2_police_radar_gun_manualnybqy.pdfIn PDF document text
    • http://unosital.space/bloons_tower_defence_4_hacked_unblockedhhwus.pdfIn PDF document text
    • https://wokozizexufam.weebly.com/uploads/1/3/4/2/134234926/gelerawana.pdfIn PDF document text
    • http://topsale.pro/android_wear_app_tutorial3n2c2.pdfIn PDF document text
    • http://j3vnci4.xyz/jonofubasapesuzumuv592h.pdfIn PDF document text
    • https://tarakemutelomul.weebly.com/uploads/1/3/2/3/132303353/rexiduve.pdfIn PDF document text
    • http://boost-store.net/534721611010e65a.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/wumodukubaru/analisis_de_sensibilidad_definicion.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_off0000e2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F2 5352 bytes
SHA-256: cca50c19ee79a2fd14995f13c4e7cf9cbc293600d6567d70341ed592837ee4a6
font_01_sfnt_off0000f536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF536 9980 bytes
SHA-256: 7021337493bd7c866c3d191f242ab287c4d577d9606dbe58e0e7f6ee1864699b

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