Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3138fc06f6e71d0…

MALICIOUS

PDF

72.1 KB Created: 2021-02-26 13:43:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 95dbee528d97c57382e310e6937f527a SHA-1: 26fcf08100ba6ab138b75ebe12de4ca6fd734ed4 SHA-256: d3138fc06f6e71d007c4de4c7683ecead459b33e664b540ff0b4b459f4a0c494
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=forged+by+fire+study+guide PDF link annotation
    • https://sefoxobifi.weebly.com/uploads/1/3/6/0/136093232/6960644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fd60e3c3f5b9.pdfIn PDF document text
    • https://vipuwajaziw.weebly.com/uploads/1/3/5/3/135398090/3600999.pdfIn PDF document text
    • https://duveniwapawas.weebly.com/uploads/1/3/4/2/134265961/luvofobanogusubaka.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/honeywell_vision_pro_8000_thermostat_wiring.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/2d8762b.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/denokorinimobokoladagax.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/65201525171.pdfIn PDF document text
    • https://kominalekawer.weebly.com/uploads/1/3/1/6/131636772/munizagi.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/jubiferekaka/word_cookies_coconut_13_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/brawl_stars_pc_supercell.pdfIn PDF document text
    • http://zowipazivavi.epizy.com/bezajipigurav.pdfIn PDF document text
    • http://jagofebasej.epizy.com/76145056703.pdfIn PDF document text
    • http://mivogunav.rf.gd/whats_the_best_oil_heater_to_buy.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/automated_guided_vehicle.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_off0000e092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE092 5028 bytes
SHA-256: 4c1294865b79377cb664a17d0b7f784bf02355fdd59cd4b5b55ee88878e23260
font_01_sfnt_off0000f1cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CD 9892 bytes
SHA-256: 0478f27e3fd2c2a3116830405a109a6e637b1c251de9e4935617c2482bb55a7a