Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeafaf2f2660473b…

MALICIOUS

PDF

69.4 KB Created: 2021-04-06 22:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4988d380497ad4a1e33963460c57d736 SHA-1: 9c5d0ecd3b017fa64d31bc0352f10388d87b3458 SHA-256: eeafaf2f2660473b112343de51d2a423c996651a35090d1ddb1074b99e2283ff
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing infrastructure. The document body, though heavily obfuscated, appears to be a lure related to downloading a Quran translation, which is a common tactic for phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://gimoguvi.ru/award?keyword=al+quran+with+bangla+translation+pdf+download PDF link annotation
    • http://vaxiliwu.medianewsonline.com/boviwokiratake.pdfIn PDF document text
    • http://pugajuxo.iblogger.org/45666275977.pdfIn PDF document text
    • http://roskycnmx.com/what_is_the_concept_of_social_developmentw16jg.pdfIn PDF document text
    • http://tisejamebip.sportsontheweb.net/96390526494.pdfIn PDF document text
    • http://vozajomaralamer.mygamesonline.org/alopecia_frontal_fibrosante_tratamento.pdfIn PDF document text
    • http://milansit.space/robert_hare_without_conscience_freeidpij.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/piruvisomosowedidowelosu.pdfIn PDF document text
    • http://jabudapitu.scienceontheweb.net/99414273310.pdfIn PDF document text
    • http://brumbum3.xyz/new_whirlpool_french_door_refrigerator_not_making_iceoguwp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_605faef652d4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5fcd33c8f3b1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407988/normal_602d5ee5dc4e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403131/normal_602bb1f5117cf.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://kiwozoma.epizy.com/amazon_sales_rank_chart.pdfIn PDF document text
    • http://lipabarud.atwebpages.com/4793394478.pdfIn PDF document text
    • http://doxokalisawe.myartsonline.com/ditoxipis.pdfIn PDF document text
    • https://84bc2af4-305a-40b7-847c-8c52cb6b08d2.filesusr.com/ugd/a2e525_c5bf6061f01644f68d1622c6a3005706.pdf?index=trueIn PDF document text
    • http://xugomoxuniwemo.rf.gd/guitar_chords_book.pdfIn PDF document text
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_773bbe1f529c4d8ab615fe63d864c21c.pdf?index=trueIn PDF document text
    • http://jabodegodonirad.atwebpages.com/arrancame_la_vida_libro_descargar_gratis.pdfIn PDF document text
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_1aade248b9154d689af53f4d528ff5d6.pdf?index=trueIn PDF document text
    • http://desujiruvomeb.myartsonline.com/gilaxabasaxajun.pdfIn PDF document text
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_d193354adb954fe6a4e31ede8f991cd4.pdf?index=trueIn PDF document text
    • http://molegonemuk.rf.gd/aer_lingus_flight_delay_compensation_claim_form.pdfIn PDF document text
    • http://babefuv.epizy.com/92061581112.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_off0000c61d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC61D 5416 bytes
SHA-256: c58afddfd96e2d9a4ffb59107da6d858606eee2bb7e6c3f19f6d4aaaa29126ba
font_01_sfnt_off0000d874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD874 8828 bytes
SHA-256: 12300226090a241cd734448dd5fd5022faa629e3e3348b0d6d1eda028aed4463
font_02_sfnt_off0000f683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF683 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378