Malicious PDF — malware analysis report

Static analysis result for SHA-256 1309faaf4de2a7fd…

MALICIOUS

PDF

75.7 KB Created: 2021-03-09 01:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c2fd8a29d2dbd6059263ce9ee1b3cb68 SHA-1: c3ba2c889eafb3a70b6fd947f14ca7e62b92fed5 SHA-256: 1309faaf4de2a7fd01bad01f7544b18aaed067c0769f877ddc0ee1a648ab4f87
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=data+structures+and+algorithms+in+c+pdf+download PDF link annotation
    • http://niwezubisake.22web.org/where_does_the_term_apocrypha_come_from.pdfIn PDF document text
    • http://sewamagiz.66ghz.com/how_to_clean_hoover_max_extract_77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479445/normal_5fd66de6c5333.pdfIn PDF document text
    • https://cdn.sqhk.co/fomanazoravu/jfqoJhb/78717471124.pdfIn PDF document text
    • https://cdn.sqhk.co/bonidanem/1Rvwibl/43805996459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380078/normal_60353cee92eab.pdfIn PDF document text
    • http://zagozogenef.sportsontheweb.net/pajageminesidagogi.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/k3XIicI/daytona_international_speedway_weather_radar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5fe3fc3d06d91.pdfIn PDF document text
    • http://rozogididibusar.sportsontheweb.net/puwiwuzaxogavatezanidi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_601d210460549.pdfIn PDF document text
    • https://cdn.sqhk.co/xotakuzazuf/hQmQhgK/30262040509.pdfIn PDF document text
    • http://mudixefibewab.mywebcommunity.org/66890121397.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
    • https://uploads.strikinglycdn.com/files/d0cdc8b0-61b6-4093-9530-4d3d708ec1cd/sanokabogiko.pdfIn PDF document text
    • http://sazevaxorofezag.epizy.com/jemekileganedigazot.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/4763572654.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/vozonefevevuwofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6079951b-6af6-49af-b126-c7f9f982330d/marvin_harris_cows_pigs_wars_and_witches_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3e2bf7-dfcb-4112-91f4-b1d2aac4960c/download_manager_wordpress_problem_google_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/60th_wedding_anniversary_invitations_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/bella_ciao_audio_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/65643019396.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_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 5540 bytes
SHA-256: da2bdc430d98467b96ecdd3aa20a49450e2f9405e1ed66ed74e52aeddfd5c083
font_01_sfnt_off0000ef88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF88 10248 bytes
SHA-256: 94c7597373f222dbfce23ee653273d6489b26aef844c86a83f5f8a6aff659864
font_02_sfnt_off00011251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11251 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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