Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbab334a9e1e7bf…

MALICIOUS

PDF

78.0 KB Created: 2021-03-05 13:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 46835501d2d360da6444c4aa2100bde9 SHA-1: 8b32ec14dcf698718eee824b1682522925a8e6c1 SHA-256: bbbab334a9e1e7bf4bf2fe871f6d86d3cd83a7c773272b8e518ecacdc22cbf89
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, indicating a link farm designed to redirect users to potentially harmful sites. The presence of external URIs and the ML classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=problems+with+ge+profile+microwave+convection+oven PDF link annotation
    • http://titofiz.22web.org/corporate_email_newsletter_templates_free.pdfIn PDF document text
    • http://begdas.fun/faramazixepazubgan.pdfIn PDF document text
    • http://thecet.xyz/principales_caracteristicas_de_los_modos_de_produccion_feudalismoa1oaf.pdfIn PDF document text
    • http://zonitupupafof.sportsontheweb.net/52206779371.pdfIn PDF document text
    • http://vanesifonemume.22web.org/arrire-_plan_flou_automatique_apk.pdfIn PDF document text
    • http://mini-cam1.club/63689880276xvofw.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/feridojubosalejezotiza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tunemajemopetuv.epizy.com/31718915368.pdfIn PDF document text
    • http://vuzuwukef.atwebpages.com/gidisadutisezid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a8f5758-2373-4f5a-bc4a-80730752ad96/ingenuity_comfort_2_go_portable_swing_weight_limit.pdfIn PDF document text
    • http://wamunezufim.rf.gd/google_form_that_populates_google_sheet.pdfIn PDF document text
    • http://zezuwolajo.rf.gd/narosamoj.pdfIn PDF document text
    • http://jenigaseze.epizy.com/eba_guidelines_icaap_ilaap_information.pdfIn PDF document text
    • http://xepipigedizovo.rf.gd/52636441241.pdfIn PDF document text
    • http://maturar.rf.gd/moviescounter_saaho_full_movie.pdfIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/26196037810.pdfIn PDF document text
    • http://wofodumav.rf.gd/how_to_draw_a_multi_story_building.pdfIn PDF document text
    • http://wepinipinalojud.epizy.com/mapiwuserevuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8986d0c-940e-4cbb-b499-5b6c35cce675/my_mac_wont_let_me_open_system_preferences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/634201bf-73d3-48af-8bd8-cec790c48459/bizegifawakusu.pdfIn PDF document text
    • http://mawokale.myartsonline.com/93645924539.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/how_to_get_the_average_atomic_mass_of_an_element.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_off0000f1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EC 5720 bytes
SHA-256: b638c24715c588b3c41f01dbed446c74d8dabe1909a1fc7f3f52455c7e64c68f
font_01_sfnt_off00010553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10553 11088 bytes
SHA-256: a6c27959ed06983b87729f94c0115eb7982113ba014077e4602004f28273cc19

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