Malicious PDF — malware analysis report

Static analysis result for SHA-256 2835596849b80b1d…

MALICIOUS

PDF

72.8 KB Created: 2021-02-27 02:35:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 97fc140a566051dd15b9a4bab61595b5 SHA-1: 3c6e0570348d76314994e2d80d4ccea9ccecd1c5 SHA-256: 2835596849b80b1d33050d261c6653976dd136cb0beb32804c561fe363595a0b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/award?keyword=system+verilog+interview+questions+and+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495973/normal_601d06549b179.pdfIn PDF document text
    • https://tilifopufobi.weebly.com/uploads/1/3/6/0/136049844/8478929.pdfIn PDF document text
    • https://mimudokax.weebly.com/uploads/1/3/4/7/134742140/lipelimatubuzi_biripum.pdfIn PDF document text
    • https://nezuwiwobitedut.weebly.com/uploads/1/3/4/6/134600585/lamewux-sabubo.pdfIn PDF document text
    • https://retowukiri.weebly.com/uploads/1/3/4/5/134592720/65117306813a362.pdfIn PDF document text
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/navipugubepenar.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/maschine_mikro_mk1_manual.pdfIn PDF document text
    • http://gelivebun.22web.org/afmc_nursing_admission_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456143/normal_6002d363db621.pdfIn PDF document text
    • https://xewixubigikuj.weebly.com/uploads/1/3/4/8/134892453/ruzese.pdfIn PDF document text
    • http://sivelural.mygamesonline.org/xajemulakugojetimizige.pdfIn PDF document text
    • https://pefemodadiz.weebly.com/uploads/1/3/4/5/134520562/5162684.pdfIn PDF document text
    • https://sirabirimafo.weebly.com/uploads/1/3/0/7/130739431/4e6e25d1a4f9.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/data_science_bootcamp_dc.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/best_beginner_running_training_app.pdfIn PDF document text
    • https://negogepif.weebly.com/uploads/1/3/0/7/130775604/fitekolubufata.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/negonanopix/xoxilijezuriwamulap.pdfIn PDF document text
    • http://wenares.myartsonline.com/the_secret_life_of_the_american_teenager_not_on_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/verizon_wireless_android_phones_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/play_store_apps_for_laptop.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_off0000e16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16C 5628 bytes
SHA-256: 4afaac929814009aec596f5d43b9398cbc1e014dc0e50ed0a29f1d6a47af65cb
font_01_sfnt_off0000f485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF485 9688 bytes
SHA-256: e0aa0be20f810ae82f7d96f29951737cddd70fd78d6bae3c8913c461b5f8974b