Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ca4b4057d6a9b8…

MALICIOUS

PDF

83.5 KB Created: 2021-03-17 23:16:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 93494460fb3453430b59eb412c9d5a0c SHA-1: 2e2630fb15f652febea15f62c56f8efffe5a074a SHA-256: f6ca4b4057d6a9b8f5a814fa899b587c57751533e8c7a47c81c0161edb5f17df
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to 'Bible quotes malayalam pdf'. No scripts were extracted, but the presence of numerous external URLs indicates a likely attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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://pelibifir.ru/award?keyword=bible+quotes+malayalam+pdf PDF link annotation
    • http://wozupabalaviv.medianewsonline.com/68114789532.pdfIn PDF document text
    • https://gekaketiba.weebly.com/uploads/1/3/1/4/131455198/nedamobotiba_fejogajewigepa_zosuwalepifumi.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/learning_teaching_jim_scrivener_descargar.pdfIn PDF document text
    • https://pijaxulejogelub.weebly.com/uploads/1/3/0/8/130874219/ecf65d251c.pdfIn PDF document text
    • https://sorozodosunew.weebly.com/uploads/1/3/1/3/131381031/cb81dcf34d3.pdfIn PDF document text
    • https://sibotapitagota.weebly.com/uploads/1/3/4/3/134378411/pavoterozewosafipuf.pdfIn PDF document text
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/lifotepo-noxowip.pdfIn PDF document text
    • http://paxosij.mygamesonline.org/81145173652.pdfIn PDF document text
    • https://cdn.sqhk.co/bujugasefoli/folAkgj/counter_combat_online_fps.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/508be7.pdfIn PDF document text
    • https://nomukemometikuf.weebly.com/uploads/1/3/1/4/131483138/cd66680c6293d.pdfIn PDF document text
    • http://interstart.online/how_to_do_social_work_researchdj10x.pdfIn PDF document text
    • http://beautysale.site/fajegamulu16777.pdfIn PDF document text
    • http://instas.site/77283910462s5lu2.pdfIn PDF document text
    • https://cdn.sqhk.co/rodisukipi/iaFMjbh/bus_simulator_ultimate_unlock_routes_download.pdfIn PDF document text
    • https://wovugozota.weebly.com/uploads/1/3/2/6/132695813/d4787cda299389.pdfIn PDF document text
    • http://zofugef.mypressonline.com/49780365612.pdfIn PDF document text
    • http://gixodugesu.medianewsonline.com/57049532745.pdfIn PDF document text
    • http://tersq.fun/procesos_basicos_en_psicoterapia_gestaltsp4eh.pdfIn PDF document text
    • http://resokipuga.getenjoyment.net/gaxomepumalo.pdfIn PDF document text
    • http://ledozikatiresev.scienceontheweb.net/how_to_call_with_fake_caller_id.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10849 5508 bytes
SHA-256: 9f155d60a58337c13e347e358dc49bfc684988a2a9cb4d07b4e0a27938a643e2
font_01_sfnt_off00011af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF7 11076 bytes
SHA-256: ce7bcd811fb722c77cdcafc03b957a248958c6ca97a3b5159d4c98e0302b6d8c

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