Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee6462811c60cd3…

MALICIOUS

PDF

75.6 KB Created: 2021-03-20 15:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 25dd6334fe1d522bd308f40d9ef72745 SHA-1: d1e8ed198909d66ee6f771dada156225175c9859 SHA-256: bee6462811c60cd38bdd41337518d5d9dc90ac6001607d498fe7e3361b53113b
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farm characteristics further supports this. While no scripts were explicitly extracted, the nature of the embedded links and the overall detection profile strongly suggest a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/wix?keyword=number+talks+second+grade+pdf PDF link annotation
    • http://tryici.xyz/verifone_commander_certification_trainingpj3gd.pdfIn PDF document text
    • http://wordsidepost.top/stephen_hawking_as_a_young_man_imagesll8s5.pdfIn PDF document text
    • http://bapulesaj.mygamesonline.org/greatest_showman_songs_lyrics.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/auditora_externa.pdfIn PDF document text
    • http://widonatozeg.mypressonline.com/kezudugatuzu.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/wofepegovexupe.pdfIn PDF document text
    • http://sushibara.net/color_quest_animalsop838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478402/normal_601721ba5b51c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407991/normal_60100197b202a.pdfIn PDF document text
    • http://rasidafepu.mypressonline.com/poronolabexuzex.pdfIn PDF document text
    • http://gdztut.com/rijezogvd5h1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_411c329bb831423aa97276395fc05292.pdf?index=trueIn PDF document text
    • http://jaminuzifibe.onlinewebshop.net/chokher_bali_free_download.pdfIn PDF document text
    • https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_b53885c2fdb147f1aeb300ed6c120874.pdf?index=trueIn PDF document text
    • https://94226b1b-8363-4ad6-a779-e61b7b16ff5b.filesusr.com/ugd/b3bc21_33747c35a55d46108439b2e9f351cad4.pdf?index=trueIn PDF document text
    • https://75cc4b12-69da-4024-8422-75f9303faa99.filesusr.com/ugd/d6c222_e2d809b3238a4a7f8d0dfa813af4560e.pdf?index=trueIn PDF document text
    • https://4bc473c2-84d0-4913-8b4e-281bf44fba2e.filesusr.com/ugd/a25dbd_c6f98ce507394dec9a4a98bde7c7b1b5.pdf?index=trueIn PDF document text
    • http://gogujigasad.onlinewebshop.net/julian_date_calendar_2020.pdfIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_19f0280fc97c432186046f97e337048c.pdf?index=trueIn PDF document text
    • http://lojubefogugiku.onlinewebshop.net/simple_audio_amplifier_circuit_diagram_using_transistor.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_off0000e7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B7 5648 bytes
SHA-256: 89629aed444a23936990c617eb6a413daf388dcae9b0e23ccd4e180e34bd02fc
font_01_sfnt_off0000fad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD8 10884 bytes
SHA-256: 575c093be09c5bc215357d11b9f3f01184edc842d6a1e43e1b58d596bbfeb7c9

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