Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6fd5c6da769d4a…

MALICIOUS

PDF

76.0 KB Created: 2021-03-29 03:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9f00284f757f47e12ff7b6e0a4baf40d SHA-1: 919d3cf55fa883a729d47c023ce72e1f6906f6ba SHA-256: 0f6fd5c6da769d4a46ab070e81726efea6c3391cfa82f3f89fba534bae6b14a0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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 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://crophysi.ru/strik?utm_term=lesco+spreader+settings+for+ryegrass PDF link annotation
    • http://mibijuzorifif.getenjoyment.net/naraxovozopo.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/safadozegapakabowotiub5jp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377095/normal_5fe4761b6c5d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454984/normal_6015b9d38c4bd.pdfIn PDF document text
    • http://milatepe.medianewsonline.com/benafap.pdfIn PDF document text
    • http://lotukaguw.sportsontheweb.net/66096743401.pdfIn PDF document text
    • http://mitisavad.getenjoyment.net/rezibixijiwurukid.pdfIn PDF document text
    • http://seplafond.xyz/23125383971rs78w.pdfIn PDF document text
    • http://bred-enligne.com/what_molecular_shapes_are_polarrx99i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477137/normal_604af46499ba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445114/normal_5fe6c5ee0f92f.pdfIn PDF document text
    • http://glossywp.online/kakemakekekiwurasuvivukin1rdn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388289/normal_5fe9cc81bbf69.pdfIn PDF document text
    • http://akmurzina.com/how_many_hours_will_an_onan_4000_watt_generator_lastcis33.pdfIn PDF document text
    • http://rinujajija.getenjoyment.net/microsoft_visual_c_redistributable_package_for_visual_studio_2015_x64_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e80b84-8ca1-4414-93bf-a41abe6aa1b8/mesimud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa6101c4-6563-482d-a367-6725f83d82a6/18682126343.pdfIn PDF document text
    • http://felugibesixe.onlinewebshop.net/are_refurbished_beats_good.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/65386536193.pdfIn PDF document text
    • http://kuxoxokazutuv.myartsonline.com/you_are_not_alone_piano_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/594f66c6-b38d-4909-a0fc-a5a9a55621ae/how_to_use_resistance_bands_for_chin_ups.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/ag_catalogo.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/61080823850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47dc2de-7b6a-4e16-a8d1-eecd7b6b23b4/kinototunefevu.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_off0000e706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE706 5332 bytes
SHA-256: faef2d3708f555a30032d457eccc3b5b089886b565d91a3c639b8e544905a092
font_01_sfnt_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 11748 bytes
SHA-256: 16ddbbef17f20bc2e6f97a541aed16ca08b6b4e815f8b47ab72955284df3ec1d

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