Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ad7fb18f170bf8…

MALICIOUS

PDF

76.0 KB Created: 2021-03-28 14:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b9fdc0054b554664326d002f76f4989 SHA-1: 6057ec6b61dc4e46de36b76c4a2ca59fe22c0155 SHA-256: 87ad7fb18f170bf85d4b12adb6d6108c2abd141c6420358697277553c7667d88
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/wix?keyword=notary+test+study+guide+ohio PDF link annotation
    • http://belplitka.ru/very_awesome_live_wallpapers_for_iphonehzkh7.pdfIn PDF document text
    • https://kidivine.weebly.com/uploads/1/3/4/5/134576756/cacaf946d9.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/2gejjYv/littlest_pet_shop_toys_for_sale_near_me.pdfIn PDF document text
    • http://igcopyrightforhelps.com/bukegaja0ch9e.pdfIn PDF document text
    • http://misstourist.info/ejercicios_resueltos_funciones_trigonometricasd9pnw.pdfIn PDF document text
    • http://freefire-gifts.com/35634736932beyvr.pdfIn PDF document text
    • https://fejegexe.weebly.com/uploads/1/3/4/6/134617501/3a55d4979.pdfIn PDF document text
    • http://card2card.live/java_basic_game_programming_exercisesgpjya.pdfIn PDF document text
    • http://sarhello.online/93121441686vxmu2.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/14115386934.pdfIn PDF document text
    • https://vimuzepujox.weebly.com/uploads/1/3/4/3/134368191/1240264.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/internship_bi_weekly_report_example.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/CyiiZjj/rajawixesa.pdfIn PDF document text
    • http://fortuneo.biz/the_memory_string3pr5o.pdfIn PDF document text
    • https://wedabivugexum.weebly.com/uploads/1/3/0/9/130968949/topijiburuzekag-jizoxifare.pdfIn PDF document text
    • http://chestlune.online/96227812627vs0bs.pdfIn PDF document text
    • http://easterthjg.com/metabolismo_del_calcio_fosforo_y_magnesiorcq4u.pdfIn PDF document text
    • http://ogranicbio.fun/how_to_make_a_pressure_transducerypz68.pdfIn PDF document text
    • https://sixumegeb.weebly.com/uploads/1/3/4/4/134476160/68b8d7269d615.pdfIn PDF document text
    • https://jowopuvuramikir.weebly.com/uploads/1/3/5/3/135313070/nizepiseweguxa-korine.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/how_do_you_make_a_hood_pattern.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/ccMGrK8/logufevabavunafomezog.pdfIn PDF document text
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/kadikalusoror.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 5124 bytes
SHA-256: c154b1767daaf5e143618740fb070c3f25111bc481f5565955faa2f01f74d987
font_01_sfnt_off0000fd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4E 10948 bytes
SHA-256: 0647dc8b46619b5dbe4fdc39999a532eac0cb72d74782cbba51314135a703386

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