Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaae3b2ebd7750ac…

MALICIOUS

PDF

79.9 KB Created: 2021-04-05 09:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a76e48d9c25f9517151b549797550e68 SHA-1: 729e457e43d7402d84fb47d40e16fa37cbe6b84c SHA-256: eaae3b2ebd7750ac62b77f298d171f710786e67083f94472f8d9aaa217660d5f
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 0.9998

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://golowaki.ru/wix?keyword=minecraft+windows+10+edition+hacked+client+1.16.1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405440/normal_604fc85b467ee.pdfIn PDF document text
    • https://libigidibejaxa.weebly.com/uploads/1/3/3/9/133997225/tutede.pdfIn PDF document text
    • http://xovuwowim.mypressonline.com/surah_ar_rahman_terjemahan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424009/normal_603044fa8a16f.pdfIn PDF document text
    • http://rogijowop.sportsontheweb.net/carlos_alberto_brilhante_ustra_livro.pdfIn PDF document text
    • https://dopakuxapat.weebly.com/uploads/1/3/4/8/134895633/51dc596.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479942/normal_5fc904896e63f.pdfIn PDF document text
    • http://mojofaza.mypressonline.com/24164412542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485572/normal_604e9b869c617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444370/normal_6059b9cbbe78a.pdfIn PDF document text
    • http://mareson.getenjoyment.net/nisinijudulugatolunozu.pdfIn PDF document text
    • http://zutolewe.mywebcommunity.org/56752657324.pdfIn PDF document text
    • http://xewodatesuporob.mypressonline.com/70206452193.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xitutudatiri.epizy.com/total_war_warhammer_2_alarielle_guide.pdfIn PDF document text
    • http://lelikerakovet.atwebpages.com/designing_power_amplifiers.pdfIn PDF document text
    • https://3df06c22-1e8a-4082-8cc2-a0fdc0609706.filesusr.com/ugd/d86e81_066c56f002544496b25e8c2ef7a3b34b.pdf?index=trueIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_8532e8bed57447b8871d0248b23ad6aa.pdf?index=trueIn PDF document text
    • http://varijaponinaza.rf.gd/samsung_galaxy_s5_mini_mobile_hotspot.pdfIn PDF document text
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_1a13e562f5cc403b97d0d8144720806c.pdf?index=trueIn PDF document text
    • http://lojubefogugiku.onlinewebshop.net/functional_hypertrophy_training_program.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_off0000f7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AC 5652 bytes
SHA-256: 8ff51e9eb57c354b970172a1b27d565b890205269553e688bb26f84a6c1bd3b9
font_01_sfnt_off00010b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B05 10920 bytes
SHA-256: d18530d51db8dedcf0028ad9fd0942584fcf407edd80c87675115dac99c24c23

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