Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e85b3fa86c76a2f…

MALICIOUS

PDF

75.5 KB Created: 2021-03-22 00:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 2d77ae78bcaa6858bb8c7844656ad83f SHA-1: 525504a08394fef6a1fdbfd9dfbe84cce3f06ad6 SHA-256: 7e85b3fa86c76a2fa3ff924c8f14b3344eaf01afb23e4f8d0ea87cbfc7ffcb07
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains keywords related to '8 ball pool generator' and application metadata, indicating a deceptive pretext to drive users to malicious sites.

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/wix?keyword=8+ball+pool+generator+no+verification PDF link annotation
    • http://lizakoku.22web.org/zefup.pdfIn PDF document text
    • http://zigapajuxijado.mywebcommunity.org/the_book_of_awakening_mark_nepo_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bisegepamitu/cijtjaO/android_10_sony_xperia_xz.pdfIn PDF document text
    • http://jakartapro.xyz/pizzeria_delfina_deliveryizn95.pdfIn PDF document text
    • http://sowakowakemim.mygamesonline.org/bibliotecas_virtuales_en_salud.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/are_ford_explorers_good_cars.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/vurijegufukufetik.pdfIn PDF document text
    • http://xazapefunel.getenjoyment.net/jozumabedasugibajape.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/accelerate_book.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/vasitesebojubowo.pdfIn PDF document text
    • https://cdn.sqhk.co/sugifila/ehhigLE/we_heart_it_app_store.pdfIn PDF document text
    • http://iglivesupportteam.com/surah_e_mulk4t85a.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/yO2Jjgm/popular_music_us_history_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/juxezijafoz/MihjhU3/vimorawugazazirulare.pdfIn PDF document text
    • http://calipshatngaccs1.xyz/urea_formaldehyde_resin_safety_data_sheetib1zu.pdfIn PDF document text
    • http://ita-fitness.fun/46219026724wncf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://favilogas.rf.gd/cara_membuat_google_form_pendaftaran.pdfIn PDF document text
    • http://rupesujutiwu.myartsonline.com/40824888107.pdfIn PDF document text
    • http://sarutufasiko.atwebpages.com/free_logo_design_software_open_source.pdfIn PDF document text
    • http://retelowanudugut.epizy.com/baby_rudin_solutions.pdfIn PDF document text
    • http://nununad.myartsonline.com/10414543401.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/nibojo.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_off0000e854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE854 5304 bytes
SHA-256: 08a0b9a9a8e8db6ea0b1afed695ccb02bde27c0d98d283e5a810bfe8f19e7679
font_01_sfnt_off0000fa79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA79 11252 bytes
SHA-256: e878db6d72477b944153e44ddf903945896987465d1de954283a5d7e49caf512

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