Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d64cb9904744a4…

MALICIOUS

PDF

72.5 KB Created: 2021-02-18 11:10:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9f995ec15f4dec3532d2136770b3fa31 SHA-1: 4fadefcae453c0392dc03eb9d14dc0d4adbaa431 SHA-256: 50d64cb9904744a4c2aeaa4e8a938ce7c5b8b8b4476ccbc81190cc116df9fe36
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=la+ilaha+illallah+in+arabic+calligraphy PDF link annotation
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/gitobiregovo.pdfIn PDF document text
    • https://dibevoxatatot.weebly.com/uploads/1/3/1/1/131164568/zixilorupazobalaxa.pdfIn PDF document text
    • https://dotaterezisal.weebly.com/uploads/1/3/4/7/134771172/roxun_makojefefif_nukikapupixuda.pdfIn PDF document text
    • https://cdn.sqhk.co/nupepewomaxu/jbBkSvA/word_collect_answers_level.pdfIn PDF document text
    • http://taher-tcac.com/freedom_of_speech_essay9loow.pdfIn PDF document text
    • https://golagunowij.weebly.com/uploads/1/3/2/6/132695575/2929653.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/hfdihgc/peraxovozewowuxekamu.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/jgMmdhb/arcade_fire_albums_ranked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitugoxopezuwu.rf.gd/checkers_apk_game.pdfIn PDF document text
    • http://watimesuw.rf.gd/gudizewitala.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/chicago_style_guide_oxford_comma.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1D 5200 bytes
SHA-256: fff316976c994c7b7e39fd3c43af4012f56f43eb15f30f179b44fc93be3543ef
font_01_sfnt_off0000dbcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCD 10420 bytes
SHA-256: 0d2507d3d45596c27678e4bda9ec8268a900e004bf399fbf32cf72afb1a0209d
font_02_sfnt_off0000ff9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9D 16124 bytes
SHA-256: 36e41cae18e84870a6887e36f2eb5f2e54453d2d75ebf58c93ddbd7afdaf767f