Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e162c3c6f5b5e1…

MALICIOUS

PDF

119.0 KB Created: 2021-03-27 21:05:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: db87e2fd6bfb461ba6ad5ea97e23f864 SHA-1: d1f8cbf1e3a641d190ff35a9c448390e673c4a4b SHA-256: e0e162c3c6f5b5e1727ac531808da4c545f449b23f67a1aa4e564fc63ff96983
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to a domain that appears to be part of a link farm designed to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://bologen.ru/award?keyword=antiderivatives+of+trigonometric+functions+pdf PDF link annotation
    • https://cdn.sqhk.co/jivonaxadu/e3c2igj/hat_trick_hockey_team.pdfIn PDF document text
    • http://girepodemaz.getenjoyment.net/que_es_la_biblia_fe.pdfIn PDF document text
    • http://shop-profildoors.ru/zafevetijuvokivokeduwojukx11ps.pdfIn PDF document text
    • http://energierecrute-emplois.com/romobopotoqcal.pdfIn PDF document text
    • http://yoptan.space/piwagatowojorolivunafelaflxcxb.pdfIn PDF document text
    • http://olipaka.xyz/3d_animated_chess_games_freeljfkx.pdfIn PDF document text
    • https://dokakuzod.weebly.com/uploads/1/3/4/8/134884054/3fb58ccd2.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/essence_anatomy_book_downloadh7qtp.pdfIn PDF document text
    • http://alsamcctv.com/sowajatobipowimetewekuydjd3.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/hhjbWgd/push_payments_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/9jbXjh9/likabi.pdfIn PDF document text
    • http://jogajep.medianewsonline.com/rfid_based_attendance_system_using_8051.pdfIn PDF document text
    • https://radoduwew.weebly.com/uploads/1/3/4/3/134351920/gopobomejuvuxekoz.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/zhcsKjd/crew_restaurant_greenwich_ct.pdfIn PDF document text
    • http://texifudosino.mygamesonline.org/jekowibetosatabawojab.pdfIn PDF document text
    • https://gosasolana.weebly.com/uploads/1/3/4/5/134523876/a25a67.pdfIn PDF document text
    • http://fimewovoko.getenjoyment.net/algebra_2_common_core_holt_mcdougal.pdfIn PDF document text
    • https://dusomekekonipa.weebly.com/uploads/1/3/4/5/134580960/rodij.pdfIn PDF document text
    • http://counterman.ru/5772633110exgtk.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://s3.amazonaws.com/fapaga/blade_of_the_immortal_movie_3gp.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/53410598499.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/guidewire_testing_challenges.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/kydex_thermoplastic_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/kendo_mvc_grid_filter_template_column.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D08 5372 bytes
SHA-256: ca66b85f56bd8f9961f3edb76665398ed0d2f7238a33f4701c5959e09fa51814
font_01_sfnt_off00017f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F3D 12104 bytes
SHA-256: b2bf053e2dbbe44dfa06e45017c58138ca1c1822e6695f78b4fbfe911f691431
font_02_sfnt_off0001a934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A934 16404 bytes
SHA-256: aeb334e5ce4fd869cc52401434822f5f29300a856fbc8f2e1333ec2c6af7e319
font_03_sfnt_off0001bf76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF76 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378