Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae15d6c0e059b31…

MALICIOUS

PDF

76.1 KB Created: 2021-03-14 04:16:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 39cd1fc95cbbbe70c065c576de19ff0c SHA-1: 582765cb86ad4fc36f282ae1f5c3e64fcf409e94 SHA-256: bae15d6c0e059b317e0dc549c52774cef7cfb408fec35516bff95976d0498252
146 Risk Score

Malware Insights

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

The file is a PDF that contains numerous embedded URLs, many of which point to suspicious or unknown domains, indicating a phishing or malware distribution attempt. The 'SE_CALLBACK_LURE' heuristic suggests a phishing context, and the ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wix?keyword=modern+diesel+technology+light+duty+diesels+pdf PDF link annotation
    • http://huaweistoreukr.xyz/12915597510cxcn1.pdfIn PDF document text
    • http://dudoxanudito.scienceontheweb.net/all_automobile_parts.pdfIn PDF document text
    • http://fosireditoj.mygamesonline.org/can_i_dye_my_hair_with_splat.pdfIn PDF document text
    • http://meetsol.xyz/4557323911hup8x.pdfIn PDF document text
    • http://universe1.space/13172232369g2mky.pdfIn PDF document text
    • https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/mukapalexupadawu.pdfIn PDF document text
    • https://wajizewikibi.weebly.com/uploads/1/3/5/3/135326478/pelumarexav-kifopi.pdfIn PDF document text
    • http://terugate.mypressonline.com/3928869993.pdfIn PDF document text
    • https://wusezituvita.weebly.com/uploads/1/3/4/6/134608160/665bea05621a6.pdfIn PDF document text
    • http://vuwiwetidajin.mywebcommunity.org/ziwojoposonoduzeneximes.pdfIn PDF document text
    • https://saworajopasu.weebly.com/uploads/1/3/0/7/130775294/ramurazesazuwevareje.pdfIn PDF document text
    • http://edalovert.xyz/99499430195gydav.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/dde7aa0c-a46b-4c03-918c-c6178eacc799/harry_potter_film_2020_date_de_sortie.pdfIn PDF document text
    • http://kogopixipinal.epizy.com/27462180342.pdfIn PDF document text
    • http://jenesigafepi.epizy.com/roland_backhouse_algorithmic_problem_solving.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e95e265e-0fa7-452c-a601-436095e9c138/is_the_dark_tower_series_worth_reading.pdfIn PDF document text
    • http://pumuroxojab.rf.gd/how_to_write_a_lab_report_apa_style.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab1603b-b178-4330-86e8-c1fda2f37352/sebutkan_99_asmaul_husna_beserta_artinya_dan_arabnya.pdfIn PDF document text
    • http://fivulesesixiji.epizy.com/70042885319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c624143-d300-4df7-80a8-fbf947e5c02f/25438223299.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_off0000e8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D5 5316 bytes
SHA-256: e3b607a79a81bda3ac48db7472db7847f7659740ffb5ba2300eeb4fd2543f6de
font_01_sfnt_off0000fb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB01 11076 bytes
SHA-256: 57e853d36b7fdb4b2b6fd7305448248c1a3ea34f2bc4a00b27f91d3ae898aa0e

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