Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe229b1e57a0dbc6…

MALICIOUS

PDF

74.4 KB Created: 2021-04-19 04:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 20194c628ba0e36e1c3d8cb80af743ab SHA-1: c7c98543d4b72d8b7a4be58900e63f9a58c0224f SHA-256: fe229b1e57a0dbc67dd2a5da3c8c3c6b5f28bee97f94bf5a2eec61d15bde1cc8
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 0.9996

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://dugedepap.ru/strik?utm_term=mantis+tiller+carburetor+diagram PDF link annotation
    • http://fortysgjdk.fun/82679618600oz25.pdfIn PDF document text
    • https://cdn.sqhk.co/vizelupavew/hejbjaw/77452099712.pdfIn PDF document text
    • https://fenorepaxok.weebly.com/uploads/1/3/1/8/131856491/1297751793.pdfIn PDF document text
    • https://cdn.sqhk.co/vokalater/jgibdjc/kung_fu_fighting.pdfIn PDF document text
    • http://liwitesuzemumex.sportsontheweb.net/will_winds_of_winter_be_released_in_2019.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/capacitive_deionization.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/haKjcgg/lozedelojomofajisab.pdfIn PDF document text
    • http://axecheat6.xyz/lirawigi4e8c2.pdfIn PDF document text
    • http://worigozuwujuva.iblogger.org/life_of_galileo_brecht_sparknotes.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/BjcPji6/murudiviketesumis.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/Tjdrehf/plague_inc_game_parent_review.pdfIn PDF document text
    • https://supuzuvafexag.weebly.com/uploads/1/3/5/3/135383103/7a87c7.pdfIn PDF document text
    • https://xusalifur.weebly.com/uploads/1/3/4/1/134131705/bovilut.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/vizonasofe.pdfIn PDF document text
    • https://dezuvatag.weebly.com/uploads/1/3/4/6/134667454/vefusomopabu.pdfIn PDF document text
    • https://samabuwe.weebly.com/uploads/1/3/0/7/130739499/5478629.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/ridgeway_grandfather_clock_troubleshooting.pdfIn PDF document text
    • http://desujiruvomeb.myartsonline.com/tipos_de_alveolitis.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/security_analysis_book_vs_intelligent_investor.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/nuxigakesikogojukejaxi.pdfIn PDF document text
    • http://rokeboki.epizy.com/summary_of_the_laws_of_prosperity_by_kenneth_copeland.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/ek_chumma_song_housefull_4_bestwap.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_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 5404 bytes
SHA-256: d148e399715b684f492a4ed90b3d2f75c52298431d5de923a35e600919b00cd1
font_01_sfnt_off0000f8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E4 10392 bytes
SHA-256: 482deac6b34b0d39f551f57839d2d2c44a7c08649a99cdcaf711afaa57ffcd24

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