Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9b5f6bd03effcf…

MALICIOUS

PDF

88.2 KB Created: 2021-03-18 04:43:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e0e2622fd0854cb12c99666278c8ab77 SHA-1: 98c39930ea02bd7cca1366f9cabb52e0b2f9c474 SHA-256: 5e9b5f6bd03effcf8383662f8ca314f586b76af79b0371205aa5de6941ef653d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://pelibifir.ru/strik?utm_term=dog+man+books+to+read+for+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365540/normal_602526d586313.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389792/normal_5fcbe4515cf77.pdfIn PDF document text
    • http://voicebftyi.com/how_to_replace_honda_civic_door_lock_actuatorl1267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492278/normal_601470a719e9b.pdfIn PDF document text
    • http://nibelv.xyz/cricket_19_career_mode_guide5kifn.pdfIn PDF document text
    • http://sozerujodurepef.22web.org/how_to_get_a_vicks_vaporizer_to_work.pdfIn PDF document text
    • http://accueilcmb.com/dometic_duo_therm_brisk_air_conditioner_15000_btulvp4f.pdfIn PDF document text
    • http://tavaxibewoposo.iblogger.org/bombsquad_mod_apk_hack.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/the_odyssey_book_13.pdfIn PDF document text
    • http://mapenibo.scienceontheweb.net/disezigekukobividoteja.pdfIn PDF document text
    • http://daddytestit.xyz/99329164253kzu7x.pdfIn PDF document text
    • http://fibutogu.mywebcommunity.org/gutanadenavi.pdfIn PDF document text
    • http://linodogeb.scienceontheweb.net/blest_be_the_tie_that_binds_sheet_music.pdfIn PDF document text
    • http://leqqurint.online/66798199438s7ked.pdfIn PDF document text
    • http://uggi-ugg.com/china_gate_full_movie_300mbwu1d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482191/normal_6013f052c4d3a.pdfIn PDF document text
    • http://pedron.fun/how_to_save_pages_document_as_on_maclfqh0.pdfIn PDF document text
    • http://yatvoyya.fun/can_a_furnace_start_a_firekwgx3.pdfIn PDF document text
    • http://idslim-italia.site/japanese_half_sleeve_tattoo_templatesqiode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pizenusogusu.atwebpages.com/51453545786.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/habitats_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/latest_malayalam_movies_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/dokolegujoxel.pdfIn PDF document text
    • http://bugixud.epizy.com/a._b._s._t_full_form.pdfIn PDF document text
    • http://xepijuxidejo.epizy.com/formation_ceramiste_marseille.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/winnie_the_pooh_box_set_20_books.pdfIn PDF document text
    • http://xafonabikox.rf.gd/the_magicians_guild_book_review.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_off00011c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C71 5396 bytes
SHA-256: 4f69ead9360880d3caa5c36d090008611aea2494f7e14675f8ac899d1b30f801
font_01_sfnt_off00012ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBB 10756 bytes
SHA-256: 169e3cf8c3ec8367d1a119b998d4b64fdd338568a0c57abeae36cbe095ffadac

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