Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc1689c30996202c…

MALICIOUS

PDF

80.2 KB Created: 2021-03-14 03:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: df167cd7c7974fbb10aaf0d31b39804d SHA-1: 5170f8492d7b6b252cf3810d5cdf548699ce457b SHA-256: bc1689c30996202c0c13bfff1fdfc51fda4068d71c27cbfe2dbbeac7a4b9ba97
126 Risk Score

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 0.9998

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://vilenefex.ru/wix?keyword=skam+france+season+3+full+episodes PDF link annotation
    • http://lebizifijafaxim.medianewsonline.com/mecanica_vectorial_para_ingenieros_estatica_10_edicion_beer_espaol.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/24759886020.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/does_mazda_cx_5_touring_have_remote_start.pdfIn PDF document text
    • http://wiboratiraveguw.mygamesonline.org/refractive_index_of_glass_slab_using_travelling_microscope.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/38255967727.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/piano_scales_chords_arpeggios.pdfIn PDF document text
    • http://vinnipoh.fun/21237567511qt8n4.pdfIn PDF document text
    • http://hushseo.online/world_history_book_freekgdz9.pdfIn PDF document text
    • http://lofoporubatul.mygamesonline.org/pedapidufuri.pdfIn PDF document text
    • http://hookup682.site/what_is_the_history_of_greecergg84.pdfIn PDF document text
    • http://pollsexpert.com/gisizifizel1iwl.pdfIn PDF document text
    • http://prizinsta.site/vifososatubadekimojuxwnpty.pdfIn PDF document text
    • http://3bureaureport.info/64321664988rozhd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d8d691c7-cf48-432b-bece-a54604b57851.filesusr.com/ugd/1e3a4b_d2918064bab64df3aa4ca04189545665.pdf?index=trueIn PDF document text
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_9cff7c74ffc34ef3b483972fc35003a3.pdf?index=trueIn PDF document text
    • http://zepizevut.atwebpages.com/silekajadinirujaj.pdfIn PDF document text
    • http://bememikat.onlinewebshop.net/bipovesesozupawozometoke.pdfIn PDF document text
    • https://0c7ecde5-8d52-4b6d-bf00-bcb9beb5fd3c.filesusr.com/ugd/b6f5a5_f29fa6f28d9c4b878520cf59323bbb8e.pdf?index=trueIn PDF document text
    • http://zezofakarol.myartsonline.com/73048673800.pdfIn PDF document text
    • https://dd39d194-9042-494f-90ab-223c96cf8da5.filesusr.com/ugd/5d3909_39599a7fd36a499fac2c389c52c7a0bb.pdf?index=trueIn 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_off0000f90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90B 5632 bytes
SHA-256: 58376215f43f9f4457050cda478901526352ed6535d09cc054427ad2880624be
font_01_sfnt_off00010c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2B 11788 bytes
SHA-256: 4ef9c441b6f5c47d6e58f10b4a2fdd71762835822713ffbbe8a078fb3abacc9a

Open this report in the interactive analyzer, or submit your own file for analysis.