Malicious PDF — malware analysis report

Static analysis result for SHA-256 e129191d2abafc78…

MALICIOUS

PDF

73.9 KB Created: 2021-01-21 04:08:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: e059e8ddc75a76db1bf44621a7bc3950 SHA-1: 3449c2b2b01c3be1ef0500cebcc49ce91de301e7 SHA-256: e129191d2abafc7871f6811f8968952acdab1fc0c747e3d350f5dfd8c2394fe9
194 Risk Score

Malware Insights

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

This PDF document exhibits multiple indicators of malicious intent, including a high-confidence ML classification and ClamAV detection as a phishing trojan. It employs social engineering tactics such as a visual download button and a password lure for an archive, commonly used to bypass security filters. The presence of external URIs, including one on disposable hosting, suggests it is part of a phishing campaign designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/123?utm_term=what+is+adobe+media+encoder+cc+2019 PDF link annotation
    • https://kufojinelimipi.weebly.com/uploads/1/3/0/7/130776518/fovejesozo.pdfIn PDF document text
    • https://varudigenaka.weebly.com/uploads/1/3/4/5/134597471/dasirixajazesikoxivi.pdfIn PDF document text
    • http://kewisanoxiv.66ghz.com/tizeri.pdfIn PDF document text
    • http://toxedajenoxin.66ghz.com/76756389426.pdfIn PDF document text
    • https://cdn.sqhk.co/jenojigise/Paif9yG/fugapilofuron.pdfIn PDF document text
    • https://bojowavezuzabi.weebly.com/uploads/1/3/1/3/131382797/kajizovib-supeme-vijeter-polusan.pdfIn PDF document text
    • https://birugenok.weebly.com/uploads/1/3/4/6/134632973/vupetuvaferewum-vugaxanedo-sales-tabinug.pdfIn PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/ajihche/fixud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://povasapodojika.epizy.com/jovogufawudaremiwesi.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/surakulirafaxeja.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/security_consultant_report_template.pdfIn PDF document text
    • http://kagiwabiluwotel.epizy.com/contaminacion_por_botellas_de_plastico.pdfIn PDF document text
    • http://wijogural.epizy.com/92164702787.pdfIn PDF document text
    • http://setiwol.epizy.com/concrete_formwork_chamfer_strip.pdfIn PDF document text
    • http://selifesupenikiv.epizy.com/antutu_3d_6._2._7_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/kdigo_guidelines_2017_ckd-_mbd.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/iso_bootable_windows_xp.pdfIn PDF document text
    • http://vaxutusurinav.epizy.com/xodurijozeminupem.pdfIn PDF document text
    • http://mugosovexu.epizy.com/tadadofulobivez.pdfIn PDF document text
    • http://dojopugoput.epizy.com/modafak.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/sony_android_tv_apps_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/lamborghini_song_whatsapp_status_full_screen.pdfIn PDF document text
    • http://jibogifimot.epizy.com/zisolawawatajerogaxib.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_off0000dbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD6 5784 bytes
SHA-256: eb67d80f47d756b8463fec92c01f3fd0fb7e2341137d3808a38b8ea3881ea095
font_01_sfnt_off0000ef5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5E 12524 bytes
SHA-256: c0ab9ee3bbee1afcd428273520086931b4aa87a715a63991caf2cccfbf9b0e12

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