Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2606ae8dbe74b5d…

MALICIOUS

PDF

74.5 KB Created: 2021-03-14 20:17:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6415fc4a24e9afabec940daaf75a31c3 SHA-1: 4f4d91dbccee4a8ad9c1e21b0253dd1481a19525 SHA-256: a2606ae8dbe74b5db11a8a2bfdab58c256ed5c57dea215580d8de0524e547083
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one specifically linked to a 'cute baby video' lure, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://seumenha.ru/123?utm_term=cute+baby+video++for+whatsapp+status PDF link annotation
    • https://cdn.sqhk.co/butiluluvuk/mOgi1jf/burizuvewobemukibox.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/6595269.pdfIn PDF document text
    • http://kushtanash.ru/bangalore_university_bsc_computer_science_syllabusz3e6n.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/fliednG/47201885541.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/0PjhghU/raronogebonuf.pdfIn PDF document text
    • http://wodedutipif.medianewsonline.com/ejercicios_movimiento_rectilineo_uniformemente_acelerado_resueltos.pdfIn PDF document text
    • http://wrestling-mma.com/689297465314hhu1.pdfIn PDF document text
    • https://cdn.sqhk.co/ramowejub/Bhe5eid/mini_stroke_symptoms_in_the_elderly.pdfIn PDF document text
    • http://instapresent.site/rhino_fm_72_finish_mower_manualwz3ll.pdfIn PDF document text
    • http://zuvexuz.iblogger.org/favezinekipuvutavipuvawa.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/drawing_on_the_right_side_of_the_brain_review_reddit.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/eiaLUhj/ringtone_cutter_for_pc_online.pdfIn PDF document text
    • https://badakawage.weebly.com/uploads/1/3/0/9/130969543/tuliripi.pdfIn PDF document text
    • http://muzomabavima.medianewsonline.com/jixasegiburonijoguruvitoj.pdfIn PDF document text
    • http://suvekitubexeso.getenjoyment.net/pdf_to_word_converter_app_apple.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/5206e87a-8f24-44f4-8de9-ad4974a8c7b3/33559106624.pdfIn PDF document text
    • http://gegenig.epizy.com/lithiase_biliaire_physiopathologie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/087ec3a6-9999-4ccd-ac6d-f95dba56e183/22014615017.pdfIn PDF document text
    • http://lofomaseforuz.rf.gd/spain_visa_dubai_form.pdfIn PDF document text
    • http://sozogakuvigoxev.epizy.com/grandma_s_feather_bed_sheet_music.pdfIn PDF document text
    • http://guxozuzemonixe.epizy.com/ben_10_omnitrix_sound.pdfIn PDF document text
    • http://masemipeba.myartsonline.com/zezebedupekirovefiwoxafur.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_off0000e5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C3 5396 bytes
SHA-256: 361f4f7492f737b44aaffb3b3a8aa6dd55fff13c94ef08c8931ecd15c4f2e9e0
font_01_sfnt_off0000f82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82E 10700 bytes
SHA-256: 71ea65305e0350a729ba82cd8161e6b4019ed6714ce34fdfe85bb9e7610168aa

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