Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8fba5664a27a66…

MALICIOUS

PDF

78.6 KB Created: 2021-03-23 01:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f4665b8827900b552d5bdf1867c5a009 SHA-1: d1d96933a1a627fe264c470bcfbe728d242c492d SHA-256: 2e8fba5664a27a66cc2841ca3f30918c482af3b035362ed2ea7277cab546ef44
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it's a lure for free downloads, specifically referencing 'minecraft gear vr apk 2020'. The embedded URL 'https://kuzutuzo.ru/wix?keyword=minecraft+gear+vr+apk+2020' is identified as a redirector, suggesting a phishing or malware distribution scheme. While no scripts were explicitly extracted, the ML classifier strongly flagged this PDF as malicious, supporting the conclusion of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://kuzutuzo.ru/wix?keyword=minecraft+gear+vr+apk+2020 PDF link annotation
    • http://appeal-ig.com/basic_math_accuplacer_practice_quizby2gy.pdfIn PDF document text
    • http://maddot.space/frases_de_atticus_matar_a_un_ruiseorijo0d.pdfIn PDF document text
    • http://afracheat4.xyz/kesewexewupedosoz1yuz6.pdfIn PDF document text
    • http://begotilujaxijis.iblogger.org/application_of_nanotechnology_in_food_packaging.pdfIn PDF document text
    • http://strgb2.ru/bike_stunt_race_master_3d_racing_apkbwi4w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475992/normal_603ea3c30eb0a.pdfIn PDF document text
    • http://cccckkkkkdd.space/gestion_de_personas_miquel_porretr1gp0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417644/normal_6017dc0b4ff8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382003/normal_601fab186bbf6.pdfIn PDF document text
    • http://polnews.xyz/weight_and_height_guide_chart_femalejfpyk.pdfIn PDF document text
    • http://lidlid.xyz/niveles_de_lectura_en_primaria_silabico_presilabicoe2mjf.pdfIn PDF document text
    • http://kmplitka.shop/48187050918phi96.pdfIn PDF document text
    • http://kreativoblako.com/very_mom_seed_ceramide_mask_sheettrrhn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373004/normal_5fec37cd96cba.pdfIn PDF document text
    • http://shoes-storie.club/62230864442uhc8p.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
    • https://s3.amazonaws.com/nafoxuda/bakalsk_prce_ujak.pdfIn PDF document text
    • http://rexevigiseb.epizy.com/carnival_of_venice_violin_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/fimebosawotowugesuxufiwog.pdfIn PDF document text
    • http://xopapikalemeb.rf.gd/83307153337.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/pumopozumedafu.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/inamanamellur_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/kuzujazuzu.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_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 5052 bytes
SHA-256: 1a348ce46e6fb704a9839c4746275f1f893472f36b6132e8acc60529c8f22213
font_01_sfnt_off0000f328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF328 14344 bytes
SHA-256: 8472900bc40a88eb444692aa4f994a8656dbd498105c30885fd65ad892f12e06
font_02_sfnt_off00011f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F49 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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