Malicious PDF — malware analysis report

Static analysis result for SHA-256 307363741838576c…

MALICIOUS

PDF

77.2 KB Created: 2021-04-25 05:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 99a6fb23ad55cf3c6efbe67783ba2b1b SHA-1: 63395b018b2b0285e9c819932de9d883c19a335e SHA-256: 307363741838576ce9d05cd2f37819a067a19434f6142a7beb104fc2862c1fef
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and employing UTM parameters, indicative of a phishing or link-farming campaign. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. No scripts were extracted, but the PDF structure itself is weaponized to deliver malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • 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 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/strik?utm_term=iso+iec+27001+benefits PDF link annotation
    • http://winoraama.space/textos_argumentativos_ejemplos_resueu7tjd.pdfIn PDF document text
    • https://cdn.sqhk.co/tusufawenu/Ejgjcgg/escape_funky_island_level_3.pdfIn PDF document text
    • https://cdn.sqhk.co/felebamifuk/ihjhhgc/kememigavolijededo.pdfIn PDF document text
    • http://8bitbeardsco.com/can_you_eat_carbs_after_bariatric_surgery6ha13.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/cXheiaB/real_zombie_hunter_fps_sniper_shooting_games_hile.pdfIn PDF document text
    • http://uniques.space/warzone_2070_super_fps_1440pwgj6z.pdfIn PDF document text
    • http://smeh-mif.space/tax_to_gdp_ratio_india_2017-18lkjgq.pdfIn PDF document text
    • http://pojokuzoxa.iblogger.org/prayer_warrior_stormie_omartian.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/cRYOjiU/digital_marketing_salary_survey.pdfIn PDF document text
    • http://yarrebitteh.online/present_and_past_perfect_continuous_tense_exercises_with_answersw9lyv.pdfIn PDF document text
    • https://bovusobovazova.weebly.com/uploads/1/3/4/5/134596491/tukurovexotivi-riwedojewitaga-tafemef.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/lFhfhir/80s_dance_music_hits.pdfIn PDF document text
    • https://joriwonakogilul.weebly.com/uploads/1/3/5/3/135305945/vezebo_rojujutogoj_pufirulubam.pdfIn PDF document text
    • http://togezapavux.iblogger.org/vagenotofobubegu.pdfIn PDF document text
    • http://spoonnumberone.xyz/1001_albums_you_must_hear_before_you_die_2019gkfq2.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/nitepuzojasesow.pdfIn PDF document text
    • http://redita.fun/suzuki_vitara_2016_user_manuals0jyv.pdfIn PDF document text
    • http://lynciguest.com/day_care_inspection_reportsexbkp.pdfIn PDF document text
    • https://rebazizezasij.weebly.com/uploads/1/3/4/5/134586802/33c95cf023a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dukoveseleg.rf.gd/razivokivoz.pdfIn PDF document text
    • http://bodufusuviv.epizy.com/balance_sheet_account_reconciliations_examples.pdfIn PDF document text
    • http://pavefobigemaxe.rf.gd/napapidil.pdfIn PDF document text
    • http://luzeparuzibez.rf.gd/68483274594.pdfIn PDF document text
    • http://zomatiragi.rf.gd/marriage_certificate_form_gujarati_download.pdfIn PDF document text
    • http://vewofosel.rf.gd/jipato.pdfIn PDF document text
    • http://gikosetopetidun.rf.gd/top_5_3d_animation_apps_for_android.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_off0000f2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C0 5020 bytes
SHA-256: b552fa3ab46d8a95f150f8e5f2aa1c359e62287b62a10f26cbaf731d5da8ca77
font_01_sfnt_off00010400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10400 10400 bytes
SHA-256: e548c4cd579be2852fc36185a927b3760606d0584f718418a96cda7527435b8d

Open this report in the interactive analyzer, or submit your own file for analysis.