Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ae404f336f38d6…

MALICIOUS

PDF

75.4 KB Created: 2021-02-17 00:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 275e74b3e8fde7cc8ed8e9203e910ea0 SHA-1: f0e9590f4a0bcc1a7ce037f49b55fda3f4851413 SHA-256: 63ae404f336f38d6cad5896947acd474ee4cd6eaa4b4b8c9765a26939d7fc13f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=skyrim+reputation+compatibility+with+immersive+npcs PDF link annotation
    • https://cdn.sqhk.co/lepudijazur/4CIugiW/recargar_saldo_como_se_dice_en_ingles.pdfIn PDF document text
    • https://cdn.sqhk.co/rufomezin/ieLifJR/21_days_survival_apk.pdfIn PDF document text
    • https://roxodebovak.weebly.com/uploads/1/3/1/4/131454305/gorababupipiketeva.pdfIn PDF document text
    • https://vaseviga.weebly.com/uploads/1/3/3/9/133986607/ce0c0fd7de7.pdfIn PDF document text
    • https://fuxarudoniw.weebly.com/uploads/1/3/5/3/135350341/2499118.pdfIn PDF document text
    • https://vifazadaza.weebly.com/uploads/1/3/4/8/134883600/1a87b9a2d866a4e.pdfIn PDF document text
    • https://guzaxogovi.weebly.com/uploads/1/3/4/6/134651677/9067155.pdfIn PDF document text
    • http://begemotiks.fun/behringer_24_channel_mixer_manualos7ay.pdfIn PDF document text
    • https://mozepuboxiwagu.weebly.com/uploads/1/3/6/0/136094106/muwosa.pdfIn PDF document text
    • http://hristogrigorov.com/reading_plus_answers_level_j_marvel_man18tlb.pdfIn PDF document text
    • http://about-fb-support.com/manual_de_entomologia_agricola_comprar7pemb.pdfIn PDF document text
    • http://liolika-rsya.ru/favourite_girl_song_justin_bieberivduq.pdfIn PDF document text
    • http://rafale.store/excel_sheet_column_title_javam6cbc.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/pegozegi/antitumor_activity_of_plant_extracts.pdfIn PDF document text
    • http://puloxivomavari.epizy.com/tifesovijejedulobenimes.pdfIn PDF document text
    • http://nenezonel.rf.gd/radefawofamesuko.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/bully_ps2_english_class_1_answers.pdfIn PDF document text
    • http://lifenasixo.epizy.com/big_biceps_workout_routine.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_off0000e92f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92F 5732 bytes
SHA-256: 5a58808c804909c43e3486e8a2b9ec5a7c08e45daf24fadc48a5b11b70f83ed2
font_01_sfnt_off0000fca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA3 10472 bytes
SHA-256: 207d7e1da7dd4cfc905a24074c74886abbc032c11b55e0d60076c9c39922aa23