Malicious PDF — malware analysis report

Static analysis result for SHA-256 df989e58a72ac5e4…

MALICIOUS

PDF

72.1 KB Created: 2021-03-03 22:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f07b417fbce64a8f6601861df463dd22 SHA-1: ed47c4a5f98f6f8f913fecb2244e48a2c415ae15 SHA-256: df989e58a72ac5e41a2f87dca219944882bb721b2c265bb0fedd3d644c03ca8a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/wix?keyword=separating+mixtures+worksheets PDF link annotation
    • https://cdn.sqhk.co/xetilibul/iibkjaP/dabowezujuvedegaguxetepak.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/j5jcgiW/36923623310.pdfIn PDF document text
    • https://cdn.sqhk.co/xoraxuvonaf/riiusus/wegegipojalaminevozeridi.pdfIn PDF document text
    • https://cdn.sqhk.co/dodalowogiv/9hagj2s/xodawimojevo.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/hciirCr/tizorolasekusaxowami.pdfIn PDF document text
    • https://cdn.sqhk.co/mosugukasiba/haOUlha/movistar_play_chile_canales.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/eFWhdia/love_island_2020_usa.pdfIn PDF document text
    • https://sefomaxezaniv.weebly.com/uploads/1/3/1/4/131483109/0200cce27b2.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://povapetaranawo.rf.gd/que_es_una_composicin_dancstica.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/end_of_the_world_movies_on_amazon_prime.pdfIn PDF document text
    • http://vonezilomobupir.rf.gd/kivawo.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/answer_to_sliced_bread_meaning.pdfIn PDF document text
    • http://wupejuxudeg.rf.gd/autodesk_eagle_user_manual.pdfIn PDF document text
    • http://refewebol.epizy.com/aankhen_film_song_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/charters_school_sixth_form.pdfIn PDF document text
    • http://wulawuna.rf.gd/88450920673.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/angular_5_dynamic_formcontrolname.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_off0000cfc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC7 5408 bytes
SHA-256: 78698578dc68eb3e7d91bda7ca1e1f787ba60d547f9c76879dbe0ec26e93c672
font_01_sfnt_off0000e20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20F 10396 bytes
SHA-256: 2d4fe175fbe365e88e4e695a647a050965dda59cca6e4f8d120e14548928df31
font_02_sfnt_off0001055e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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