Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a2e378bd5b55f2…

MALICIOUS

PDF

83.7 KB Created: 2021-03-24 11:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3a056fcdbb2a27fb997db25bfd14fbd6 SHA-1: 75121d8710c4039e51da455db67fc8db8a15e91c SHA-256: 79a2e378bd5b55f2c1f3631213cd81e7b70d736a8fd8957cb8e27c6aff9c4678
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting services and are likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to the embedded URLs, suggesting a lure to trick users into visiting these sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://resalured.ru/award?keyword=barrier+nursing+techniques+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385436/normal_6058f7b55b308.pdfIn PDF document text
    • https://zevugakarexavak.weebly.com/uploads/1/3/1/8/131857252/7289920.pdfIn PDF document text
    • http://springtea.space/navujexolatekabunej8rdwx.pdfIn PDF document text
    • https://gamubojuteno.weebly.com/uploads/1/3/5/2/135299935/8198877.pdfIn PDF document text
    • https://vilawapa.weebly.com/uploads/1/3/2/7/132740366/goropimerodanapope.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384145/normal_5ff8acf854be6.pdfIn PDF document text
    • http://hempmap.ru/sawosapayhbfj.pdfIn PDF document text
    • https://najatiruz.weebly.com/uploads/1/3/0/7/130738831/7582449.pdfIn PDF document text
    • http://xabidewukolesas.66ghz.com/zibewizokaxena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460449/normal_60501901c6873.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/xitolo.pdfIn PDF document text
    • https://zokukomusisitu.weebly.com/uploads/1/3/5/3/135323242/0458c30.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/apply_problem_solving_techniques.pdfIn PDF document text
    • http://tells.fun/lojamilugogutojefa3e8t9.pdfIn PDF document text
    • http://rewita.fun/rank_the_states_on_the_basis_of_the3xtbp.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/saram.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/aisi_lagi_lagan_javed_ali_ringtone.pdfIn PDF document text
    • http://mynasert.online/serusivoksuktq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_602f427456514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378830/normal_6002d4df06bab.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/ecdl_advanced_spreadsheets_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/17518001770.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/topukebuvozamegen.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/vikeviwifokopetuxevel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxepivol.myartsonline.com/pdf_agama_islam_kelas_11_semester_1_kurikulum_2020.pdfIn PDF document text
    • http://razikonuwivomo.epizy.com/mitisamusuruxiwuwilosoku.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/35219277755.pdfIn PDF document text
    • http://zenakezogutomu.onlinewebshop.net/bsa_medical_form.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F1 5560 bytes
SHA-256: 94af4950a212107956d25a2ee797a0d0fec106cd55c0380b6355c61b4eba964c
font_01_sfnt_off000105d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D2 11132 bytes
SHA-256: 337692c45606f004676be99e01b5564a66d3b99da284fcc4a8b380fe0912158b
font_02_sfnt_off00012c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C05 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330