Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d9bcf44a96e2ac…

MALICIOUS

PDF

74.4 KB Created: 2021-03-09 15:39:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 1180ac9f31f0b4fc47aeed768a6514f9 SHA-1: 90a07da590f10134d915972248d90895793e60ab SHA-256: 19d9bcf44a96e2ac952f17e2c90524ab1160ce30dc2bc161a4f94614d7fa63ac
164 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which are dynamically generated or use numeric slugs, indicating a link farm designed to manipulate search engine results and potentially distribute malware. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or trojan distribution. While no scripts were explicitly extracted, the PDF structure and extensive link farm point towards an attempt to redirect users to malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=gdhxw+paint+sprayer+universal+spray+guide+accessory+tool PDF link annotation
    • https://wakavofidokevi.weebly.com/uploads/1/3/2/6/132681750/tuxepaguw.pdfIn PDF document text
    • https://bopamoverera.weebly.com/uploads/1/3/1/4/131408256/lomow.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/6497833951.pdfIn PDF document text
    • http://jepewadagamer.scienceontheweb.net/jagunivakiwukuke.pdfIn PDF document text
    • https://rumeravovavupol.weebly.com/uploads/1/3/4/6/134619367/ebca8.pdfIn PDF document text
    • https://wajotirege.weebly.com/uploads/1/3/5/3/135306859/nagogilememim.pdfIn PDF document text
    • https://forugizatufuru.weebly.com/uploads/1/3/1/4/131410167/71138a5.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/jolozidabi/zowebizinikejukosaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88467596-e75f-4410-b998-b89c0af21e50/magimoki.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/filmorago_app_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/how_to_crochet_tr_cluster.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/cen-_tech_digital_multimeter_p35017_manual.pdfIn PDF document text
    • http://bodirinukamole.onlinewebshop.net/jaybird_x3_vs_x4_vs_tarah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6873fd97-291f-4eba-9c44-fae084b2987f/39915823605.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/carry_on_my_wayward_son_cover_finale.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/78931762200.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/who_makes_the_best_mini_split_air_conditioner.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/592586214.pdfIn PDF document text
    • http://mawokale.myartsonline.com/13920408058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/234c31fa-24f4-4c80-9b0f-4d1f3e7f63be/penny_stocks_for_beginners_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/95246758675.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/baasha_2017_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/coconut_oil_molecular_structure.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_off0000e308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE308 5688 bytes
SHA-256: d75b627c5cccc29201ad73954d65e90f2786abb875f8328de1f263ec23a0ba45
font_01_sfnt_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 10964 bytes
SHA-256: e455c9f2a654b0181b85f995f47d938d16e95d906a5d8f88ae30853b09ea25a2

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