Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb74adf8cd732eb…

MALICIOUS

PDF

330.0 KB Created: 2021-02-28 07:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0fdc865844f4d27970505ffbbfdff808 SHA-1: 51a17ee39fe2406988adce290e6eefc7bc59da15 SHA-256: ebb74adf8cd732ebaae8d4c52d80c6d2a013ec1c0dac8f00ca1a6ce651a8b526
144 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan variant. The heuristics indicate it uses urgency and MFA lures to trick the user into interacting with embedded links. The primary external URI, 'https://zajinet.ru/aws?utm_term=sword+art+online+light+novel+vol+15', is likely part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9712

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://zajinet.ru/aws?utm_term=sword+art+online+light+novel+vol+15 PDF link annotation
    • https://cdn.sqhk.co/tixukiko/ifGWidA/jalagabumom.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/cGgjAAF/90440792393.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/DAiahde/sulfur_chloride_electron_configuration_excited_state.pdfIn PDF document text
    • https://cdn.sqhk.co/kakezesarop/ghh4xL8/rozerabagigemuwoxomoma.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/98733549168.pdfIn PDF document text
    • https://cdn.sqhk.co/xalesikozip/hf5igE3/wesevowuxajewajufozafevek.pdfIn PDF document text
    • http://fitness-ital.fun/what_cleanser_is_good_for_fungal_acnex3bhb.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/fjfifji/sky_events_management_sdn_bhd_address.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_601b18793f728.pdfIn PDF document text
    • http://vuwimoxit.mygamesonline.org/wojixifa.pdfIn PDF document text
    • http://bnl-jobs.com/good_examples_of_conflict_resolution_in_the_workplaceduqg1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448550/normal_600b10f4b8ad2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378386/normal_5fc666069f618.pdfIn PDF document text
    • http://lunesygets.xyz/lego_star_wars_tfa_red_brick_codesd82jw.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/dggjixO/zofutalatamajanazakituna.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/85366005251.pdfIn PDF document text
    • https://cdn.sqhk.co/motuxeneb/ig3f78H/powajufokir.pdfIn PDF document text
    • http://milansit.space/the_crown_season_2_episode_6_fact_checkh7w8k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://belibivizonojo.myartsonline.com/lunugifesalakosa.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/icd_9_code_for_arteriovenous_malformation_colon.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/sign_guidelines_lower_gi_bleed.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/raxalitasaliv.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_off0004dfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DFB8 5340 bytes
SHA-256: e0deb1b80132bd0172fef9f45ca5e3e30e7dc811d62207a42c5217a9390bbc32
font_01_sfnt_off0004f1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1F3 11276 bytes
SHA-256: e2e9c21efeeec374cb0dcfb9175209ac2e0de8607c98fe16e6fa4e467aadd500

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