Malicious PDF — malware analysis report

Static analysis result for SHA-256 361bc2d5f7ace4f6…

MALICIOUS

PDF

69.2 KB Created: 2021-02-27 16:35:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ca286cc6cffee7abc6dbc7b7d260a046 SHA-1: a8d837ecf165ddeae9ee5b5a1a6bb2a737851159 SHA-256: 361bc2d5f7ace4f62704488c8aef5dd3bca5d01282760a20c2300087ac18ac2d
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://seumenha.ru/award?keyword=how+to+add+watermark+to+nuance+pdf PDF link annotation
    • https://cdn.sqhk.co/rixutixim/gJjcMm2/64992845815.pdfIn PDF document text
    • http://zitosobuzozuz.22web.org/76739454956.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446647/normal_5fceabb55d96b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_5fdc46e08a58f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5fe11ced4afb5.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/ibJ5haP/nebabibetetuverodokugib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425738/normal_5ff0162e07838.pdfIn PDF document text
    • http://deruvakibifazo.iblogger.org/voluxobobupamizevutoruwe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kawojimulogizef.rf.gd/apology_for_inconvenience_to_valued_customer_templates.pdfIn PDF document text
    • http://dukiduzafenej.epizy.com/ga_automobile_bill_of_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/upper_extremity_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/how_to_clear_kenwood_bluetooth.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/vcut_dili_kitap.pdfIn PDF document text
    • http://sisuvoxodukon.epizy.com/hibernate_mapping_annotations_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/sobagaj.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_off0000d556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD556 5208 bytes
SHA-256: c32f6b528b98dcea9a0de17266018415aa91ce7489a8c608f40087aadfa7f5f6
font_01_sfnt_off0000e70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70E 9636 bytes
SHA-256: df97d2d8a2c45defe342122f10e40dddaa0c15b34791b6ce22e186fcbe5277d1