Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e864c2b57ca299…

MALICIOUS

PDF

84.2 KB Created: 2021-03-20 02:20:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 94e958a52ba51c1f81ee28f4ab2a63d3 SHA-1: 9f9fc3d93e3d8cd80588e59aa283bd740e8417cd SHA-256: 05e864c2b57ca299e78b91ab712a6c2694b53414847fe6db92589c3677d31d26
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 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://jumiwimov.ru/strik?utm_term=what+is+the+meaning+of+apple+in+dream PDF link annotation
    • http://modernstyle.pro/final_fantasy_iv_the_after_years_snes_romgnn26.pdfIn PDF document text
    • https://gimiduti.weebly.com/uploads/1/3/4/7/134711596/406845.pdfIn PDF document text
    • https://cdn.sqhk.co/zativojor/eiifPii/47222005532.pdfIn PDF document text
    • https://kawavaturitavo.weebly.com/uploads/1/3/5/3/135321378/6391686.pdfIn PDF document text
    • http://bottlechainworld.com/frsky_qx7_manualjwje7.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/d0ROlOM/7247614999.pdfIn PDF document text
    • https://kurisakon.weebly.com/uploads/1/3/4/5/134504438/8189417.pdfIn PDF document text
    • https://cdn.sqhk.co/rovukupovumo/wjfCmif/askip_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/ehZTtRR/flowkey_piano_lessons_review.pdfIn PDF document text
    • https://pukaxonimuno.weebly.com/uploads/1/3/4/4/134435323/3713658.pdfIn PDF document text
    • http://autolombardpro.ru/zabifokedasiwaxi3g8i4.pdfIn PDF document text
    • https://dilabugesoko.weebly.com/uploads/1/3/4/6/134627797/ragipuwi.pdfIn PDF document text
    • http://idealica-italiaoficial.site/how_to_be_rich_in_your_early_20sz8r3w.pdfIn PDF document text
    • https://cdn.sqhk.co/nakusunegud/3jgITib/formula_atlantic_engine.pdfIn PDF document text
    • https://fuvapele.weebly.com/uploads/1/3/0/7/130738919/5885edf0fec2c09.pdfIn PDF document text
    • https://jutonoxefakevuw.weebly.com/uploads/1/3/1/4/131454335/1050561.pdfIn PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/nuranigu_zamij.pdfIn PDF document text
    • http://iblack.space/45087231928le0wy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/luxaduzimase/john_deere_d170_deck_parts_diagram.pdfIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_2fc5f2ac3c0d4bd7a3f3a110e917a394.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/vupikajumenozabikamunuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/xamevegipusowotaxonu.pdfIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_3db1fc3d90834f1f86bc5dadfb931cd8.pdf?index=trueIn PDF document text
    • https://72dfff08-f6cb-4f5d-aaac-ebe71175d6a6.filesusr.com/ugd/c268f7_b7ef81cd6fd947759522e5185c328417.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB6 5256 bytes
SHA-256: a17efe7a2065f86216318db90dbc1b347ea551bee4624d9389d467043cce8550
font_01_sfnt_off00010e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7B 11236 bytes
SHA-256: a55d0e36d76906c51e465c95dfbc88d77814e4718dd3b991b438ae39348f5cbc
font_02_sfnt_off000134e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134E6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2