Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00217237d4b7f69…

MALICIOUS

PDF

100.2 KB Created: 2021-03-19 04:20:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7a5243529d802627d8dd670db0bfff19 SHA-1: 48729d832b83183a650d1acf53c551d6a0fb7b14 SHA-256: f00217237d4b7f692761bf6b821e341c8e56d418ee4d6931e15b802d55187dd9
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content likely attempts to trick users into believing there are changes to payment or banking instructions. Numerous external URLs were extracted, suggesting a link farm or redirection mechanism to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://kuzutuzo.ru/wix?keyword=back+to+back+stem+and+leaf+plot+worksheet+pdf PDF link annotation
    • http://dutusejutax.22web.org/free_breathless_by_shayne_ward.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417527/normal_5fef11bf57d3c.pdfIn PDF document text
    • http://nitafefuxomod.22web.org/60476966185.pdfIn PDF document text
    • http://nubuweso.iblogger.org/93960308428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5fe718aa7b02c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6964baf5-b887-40c6-90b0-c86810915223/40459192973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/433a4649-aab2-42f6-a1a7-d3b802a4dfcd/migokavopesaxuminavivupik.pdfIn PDF document text
    • http://jiwimid.epizy.com/the_fox_and_the_crow_read_aloud.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/bee_movie_app_free_for_pc.pdfIn PDF document text
    • http://rawozovikoruros.rf.gd/aashiq_boyzz_dance_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa37fd5a-e5fc-4f5b-9d5f-5a484c500ce6/ac_joint_injury_rehabilitation_exercises.pdfIn PDF document text
    • http://bavalididot.epizy.com/novel_ahimsa_azaleav.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/jiwivuzufixezimelu.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/89538876734.pdfIn PDF document text
    • http://nifekubipaxo.epizy.com/64302960800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b652dc83-8ea3-4b7a-b4fd-1b6f2e7c447f/canon_eos_rebel_xti_400d_lenses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c83e413-c5d2-4db7-9dfd-bd260cbdd102/xevolixof.pdfIn PDF document text
    • http://wafotigukip.epizy.com/managerial_accounting_garrison_15th_edition_solutions_manual_free.pdfIn PDF document text
    • http://rawarawoxegig.epizy.com/facility_report_o_que.pdfIn PDF document text
    • http://ex-interim.blogspot.com.auIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE2 2828 bytes
SHA-256: 3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec
font_01_sfnt_off000148dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148DD 5740 bytes
SHA-256: 04d4b9cec728616b0a5f54fc48683c90d89522767412538e1a007dbc0dd50449
font_02_sfnt_off00015c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C4F 11128 bytes
SHA-256: 9424ceedac9323278917f713b7eff08e2380ff65a072789e7a7ae42351d0f87e

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