Malicious PDF — malware analysis report

Static analysis result for SHA-256 7623ea44f28806c9…

MALICIOUS

PDF

79.7 KB Created: 2021-03-21 02:16:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2e8be6a753437d4eaa4cdd05ff6701c6 SHA-1: 08d65c435275d3bbebc9699fb2c02dccc66b77a5 SHA-256: 7623ea44f28806c91b1df6252e1628db1c1bcf7cf433cf69b5410b9721eb4d78
146 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of numerous external URIs, including a link farm on disposable hosting, suggests an attempt to redirect users to malicious sites. The 'SE_CALLBACK_LURE' heuristic indicates the document likely contains content designed to trick users into making a phone call, a common tactic in phishing and tech-support scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://soxebez.ru/123?utm_term=centerfield+john+fogerty PDF link annotation
    • http://fezanabuxa.22web.org/kiran_publication_bank_clerk_books.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/hdhctgi/87543843274.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/Dnhcil3/transport_tycoon_online_spielen.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/mjijjSJ/36680768776.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/jajgjav/brick_game_app_download.pdfIn PDF document text
    • http://lezagerodise.iblogger.org/cfa_level_3_curriculum_free_download.pdfIn PDF document text
    • http://figedizizexi.22web.org/3d_printing_designs_fun_and_functional_projects.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/nwJl5jc/hack_games_my_talking_angela.pdfIn PDF document text
    • http://rilotelexewobos.iblogger.org/practical_aviation_security_2nd_edition.pdfIn PDF document text
    • http://bamitizelomodil.22web.org/clasificacion_de_las_cuentas_reales_o_de_balance.pdfIn PDF document text
    • http://bowenaf.22web.org/ms_office_2007_tutorial_free_download_in_hindi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://texagofudadeket.epizy.com/account_all_formula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/142a32f6-6c31-4a0f-ac59-9e30ac25e784/can_solar_watches_be_repaired.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c61149d3-1cfa-4a37-8283-fac6d7789c07/fodiboduj.pdfIn PDF document text
    • http://sonisan.epizy.com/dan_and_shay_speechless_piano_sheet.pdfIn PDF document text
    • http://kewuzelaxapog.rf.gd/ralarozukasow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ba0e45-69da-49f3-adfa-546dddfba396/5757860409.pdfIn PDF document text
    • http://foxebunuref.epizy.com/takagovemopimulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2231408d-360d-4fea-b877-6bf7a5d9240c/sat_prep_classes_near_me_cost.pdfIn PDF document text
    • http://sogefotatuledis.epizy.com/android_tv_stick_play_store.pdfIn PDF document text
    • http://wisavuxobogula.rf.gd/negadutimowozadiloladago.pdfIn PDF document text
    • http://fafalibowadavuz.rf.gd/rapuvapojalob.pdfIn PDF document text
    • http://lolofekigosot.epizy.com/fake_caller_id_unlimited_credits_apk.pdfIn PDF document text
    • http://jotikovan.rf.gd/20780296099.pdfIn PDF document text
    • http://wisubiko.rf.gd/appraisee_comments_on_appraisal_form_examples.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF022 4864 bytes
SHA-256: 1df66a42f697841cb4a11dcbcd9acd1c63771cfa30d5bc32dca3f24a1758852a
font_01_sfnt_off000100b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B0 11112 bytes
SHA-256: f7f5c3e667ca737d804634619201540fb294e0cbe349e21df1fbbc75ebcf6008
font_02_sfnt_off000126c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C4 2872 bytes
SHA-256: 5542584bac2721369b3dfd42b4d044c30174e3f5167a8c68113049866734dfe3

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