Malicious PDF — malware analysis report

Static analysis result for SHA-256 90763b8ee9410ccb…

MALICIOUS

PDF

72.0 KB Created: 2021-03-22 06:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c39c0f368704eab5041f3236ad60f5c5 SHA-1: 815b11511339e8847b100bfa653f634d4f0659ce SHA-256: 90763b8ee9410ccb5faa1827b22f1a90fd9c79638f1cb89d64d9a6e8140cf5d0
126 Risk Score

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://druttle.ru/wix?keyword=rug+doctor+ez1+manual PDF link annotation
    • https://wojizenufojanog.weebly.com/uploads/1/3/4/7/134724603/b86c635756.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/victoria_australia_map.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457011/normal_5fc990fae2609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392661/normal_60547597d65ab.pdfIn PDF document text
    • https://sopazamiwurigu.weebly.com/uploads/1/3/4/3/134387891/de27b0e45a9cd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417531/normal_5fdda802c55f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490524/normal_5ff9e8f9f1c87.pdfIn PDF document text
    • http://funusamemis.22web.org/power_pressure_cooker_canning_instructions.pdfIn PDF document text
    • https://balolemarivapi.weebly.com/uploads/1/3/5/3/135309218/feporixafoduferejaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_d727d687a8bb457aad37909dc6aea685.pdf?index=trueIn PDF document text
    • http://zewuvumanoxulo.rf.gd/arc_length_word_problems_worksheet.pdfIn PDF document text
    • http://kirotomi.epizy.com/71674984452.pdfIn PDF document text
    • http://fotolen.epizy.com/38854925214.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/persona_4_hermit_arcana_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/analytical_biochemistry_books_free.pdfIn PDF document text
    • http://pavasokunise.epizy.com/kreutzer_sonata_sheet_music.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_3240e8199fb9430fba3339cca8f4d3df.pdf?index=trueIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/56816785681.pdfIn PDF document text
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_d13903614571403f90b8b1109e9f4c65.pdf?index=trueIn 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_off0000dcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB7 5188 bytes
SHA-256: 1f313943dd1566877b6f00c4603ff88d62b4abe538329dc9986768c3c2cecaff
font_01_sfnt_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 10868 bytes
SHA-256: cda0d809a745aaaa3afb5ceb1af16284933dfdad4e95a99cb501164d95fd38c5

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