Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a498bc26b5f729…

MALICIOUS

PDF

79.0 KB Created: 2021-03-14 10:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: abf623cda0dd86d582279a71d5b26d01 SHA-1: d46e74c7735f46dde841f88708cdc56d60cc9e9e SHA-256: 69a498bc26b5f72999c370ae285abaddd58495313047ba44dbacdd2f63cbac9f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary suspicious URL identified as 'https://druttle.ru/award?keyword=annona+muricata+descripcion+botanica+pdf'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a malicious intent to distribute or redirect. The ML classifier and ClamAV detection strongly indicate malicious content, likely phishing or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/award?keyword=annona+muricata+descripcion+botanica+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383566/normal_60267c6e77e51.pdfIn PDF document text
    • http://espaceabonne.com/77204346353cicjo.pdfIn PDF document text
    • http://kozevoviwepok.iblogger.org/dizaviruduxivopurot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467561/normal_5fce493adf988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463279/normal_60198063cf487.pdfIn PDF document text
    • http://it50save.info/sawoluvomiremazokipovivoz4o9n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470524/normal_602eee3f79994.pdfIn PDF document text
    • http://faketikus.22web.org/why_graph_data.pdfIn PDF document text
    • http://wikotimu.scienceontheweb.net/pdfbox_pdpage_example.pdfIn PDF document text
    • http://fitnesspack.net/birdman_movie_hdpopcornszr2wv.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/napopaf.pdfIn PDF document text
    • http://small-italy.space/free_printable_coloring_sheets_back_to_schoolfyl7j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jefevuxivux.epizy.com/boxivo.pdfIn PDF document text
    • http://delitareba.rf.gd/promissory_note_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/omron_hem-780_small_cuff.pdfIn PDF document text
    • http://vobikeretuwof.atwebpages.com/rorudegi.pdfIn PDF document text
    • http://zonatenitisa.rf.gd/89684938924.pdfIn PDF document text
    • http://tuvonatesomu.epizy.com/caracteristicas_de_los_personajes_de_la_ciudad_de_las_bestias.pdfIn PDF document text
    • http://pekotezubefem.rf.gd/what_happened_to_pete_in_a_feast_for_crows.pdfIn PDF document text
    • http://kopolug.myartsonline.com/fabuduwabuzokefokokanarag.pdfIn PDF document text
    • http://vegozuw.epizy.com/motion_to_dismiss_with_prejudice_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/wopebufofutiwijipisowima.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A3 5280 bytes
SHA-256: 84347666d10b70c676721c01b007c696c82317560576775a39dcb8fa23a6d625
font_01_sfnt_off0000f86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 11748 bytes
SHA-256: 06019741481500e64c3822d38e0b12cd35a30755e3601033f586412fe60796b8
font_02_sfnt_off00011ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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