Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc0ded58372b1e0…

MALICIOUS

PDF

90.9 KB Created: 2021-03-17 02:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce12d2bd1650b9ea3d2b4298f60f7ec SHA-1: be74b564c06eeaaf3a5a612c3536b7a7059b9978 SHA-256: ebc0ded58372b1e0213aa6a2c3e4850677dd39043c01955739f0dfc7e0fc8b8c
186 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a large number of external links, likely for SEO manipulation or to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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.
  • 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://maypoin.ru/wix?keyword=skam+espana+official+website
    • http://vasakuso.sportsontheweb.net/25900816689.pdf
    • http://kiparegazeratax.getenjoyment.net/9794143398.pdf
    • http://kojijeku.mygamesonline.org/beretta_92fs_trigger_kit.pdf
    • http://kaboliwup.mypressonline.com/rifudenivadunatekavagus.pdf
    • http://fisujerekuvij.getenjoyment.net/learn_english_free_youtube.pdf
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/musivaxisuv.pdf
    • https://static.s123-cdn-static.com/uploads/4393752/normal_5fef4ba7c5368.pdf
    • http://muzibatixabu.mypressonline.com/miduxikusenerapu.pdf
    • http://vevufilusik.scienceontheweb.net/femaja.pdf
    • http://vovavipegum.getenjoyment.net/26858973199.pdf
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/373706.pdf
    • https://kuvugelovusilu.weebly.com/uploads/1/3/4/4/134437140/7817949.pdf
    • http://tixaman.scienceontheweb.net/88035777365.pdf
    • https://dovizitozul.weebly.com/uploads/1/3/1/4/131408131/8461817.pdf
    • https://cdn-cms.f-static.net/uploads/4384483/normal_6043572ea0848.pdf
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5feee1b532510.pdf
    • http://mumopajikex.mygamesonline.org/curso_basico_de_ingles_para_nios.pdf
    • http://kewatupu.scienceontheweb.net/high_achievers_b1_workbook.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_e1e4598e51344278a49659b824b9dd00.pdf?index=true
    • http://xejawaji.myartsonline.com/cours_d_anglais_et_mp3_gratuit.pdf
    • https://d7179dab-c972-4501-9f4a-16044ca71e84.filesusr.com/ugd/434f74_dba07d07f3b54ebfb7ced73945f5e999.pdf?index=true
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_7b15a6f762174168aeb7bfbad0e88d8e.pdf?index=true
    • http://ranitirunom.myartsonline.com/your_grace_is_enough_chris_tomlin_sheet_music_free.pdf
    • https://2daccc73-8708-4113-a26a-4f38906335d9.filesusr.com/ugd/f65175_188dfb25a31c42b484810fb0135a0780.pdf?index=true
    • https://ef733714-782c-48ea-8991-1bc0bf0c95f2.filesusr.com/ugd/ad2ade_725af69e950d4653993c5c01538e1b75.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011586.bin
58038e63608c14321db52d700e8b063d51cc336a806ff0fcc161fadfec6c6a24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11586 5252 bytes
font_01_sfnt_off0001275b.bin
bbf3191aad7f045eb8d7f2d4558d04cad4e64dbeb1fdfcd6de99d60ce720c23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1275B 12460 bytes
font_02_sfnt_off00014fb7.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FB7 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.