Malicious PDF — malware analysis report

Static analysis result for SHA-256 169d7b9de1fc6646…

MALICIOUS

PDF

67.7 KB Created: 2021-03-03 00:31:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 848ae8cddc4d3cb968a915828fc51f24 SHA-1: 07cbd1bd4dc96a6d8813224450384bd1c3432f4d SHA-256: 169d7b9de1fc66460b4cf4acf8fcf4343d6eaab78640d4bf12bbad8bc9e20484
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://ponafet.ru/award?keyword=how+to+use+electric+ice+shaver+panasonic PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393034/normal_5fefd968f0299.pdfIn PDF document text
    • https://xadebunurag.weebly.com/uploads/1/3/1/4/131454816/pojikupitivivosumez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481059/normal_60232f7a37eb0.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/xixakapajenatiri.pdfIn PDF document text
    • http://dorightschool.com/86158635056s8tr3.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/baby_girl_names_that_start_with_k_in_spanish.pdfIn PDF document text
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/kevefabili-senikagiku-mesixezinuf-mebupabixonetu.pdfIn PDF document text
    • https://tamosumedov.weebly.com/uploads/1/3/4/0/134017363/sufapozusu-xawutibetebo-biriki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_5fe6a822994f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477173/normal_602efcd6f0f1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490273/normal_6038e6a1bce63.pdfIn PDF document text
    • https://supimoxu.weebly.com/uploads/1/3/5/3/135319300/vosonitele_xaginiw_sidipanufop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_5fe7f823e852d.pdfIn PDF document text
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/xivopefilivisu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girofili.myartsonline.com/what_habitat_does_a_white_tiger_live_in.pdfIn PDF document text
    • http://kepirodineloga.epizy.com/panubutujipesi.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_off0000ce2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2A 5132 bytes
SHA-256: bb27bcf65c5207b25678d622762a610198cb48af47d3930047edae63556c98ae
font_01_sfnt_off0000dfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAF 9872 bytes
SHA-256: 3f114814c71a710defee016aff2118afd883ecdfa580238e8e36fc9ca3b2cafe

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