Malicious PDF — malware analysis report

Static analysis result for SHA-256 922e18d2c0d296ca…

MALICIOUS

PDF

73.1 KB Created: 2021-01-19 04:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e3e0ac5a7b096cb4b16c1519630fe332 SHA-1: 50e3734c6e92a841f26ab9748673650a887f0b2f SHA-256: 922e18d2c0d296ca197e3dfd79257916367bf7bb046405ceeeb2360c7b1807ba
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/aws?utm_term=ikea+kitchen+planning+guide+pdf PDF link annotation
    • http://fewemika.66ghz.com/zafagowez.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiliziv/gg1fmii/tiny_planets_episodes.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/6252820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445118/normal_5fdc6e5393456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_5fc12af585cfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5f99241387eb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443610/normal_5fdfd33f5a627.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/Y8hgjep/90025251487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_5fa1fdef7b9a7.pdfIn PDF document text
    • https://jelafabonopavu.weebly.com/uploads/1/3/4/4/134443296/gitulefe.pdfIn PDF document text
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/jajizenop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f8726bbdd843.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413238/normal_5feb995d12855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408583/normal_5fda5f14bdd69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jupanadipi.rf.gd/sfg20_maintenance.pdfIn PDF document text
    • http://nuvitaros.epizy.com/bhoothnath_returns_movie_hd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/lubizubonuzed.pdfIn PDF document text
    • http://wajodojizofe.epizy.com/ncert_12_biology_book.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_off0000defd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFD 5144 bytes
SHA-256: f1b4048c9621d806c986075b5357d3248e2beebd63bdf90ecdcd0e2acea043ed
font_01_sfnt_off0000f085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF085 11656 bytes
SHA-256: 4fadde6c1a847811ab89d1ea3944e97cdf309d2fe0f47f1a87b1bdb0c04e0c05

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