Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab117ef2164b7e7…

MALICIOUS

PDF

71.3 KB Created: 2021-03-24 12:28:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0cf3169b162b2b5e18117ba2318660e8 SHA-1: 5ae587daec2db64dded579f2d192de53569c7454 SHA-256: eab117ef2164b7e70e5c00e9056d858f47419f97df193379fc5b493125dd6c33
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'wuzzles level 4 answers', likely intended to redirect users to malicious sites for further exploitation. The presence of external URIs and link farm characteristics indicates a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://jacksth.ru/wix?keyword=wuzzles+level+4+answers PDF link annotation
    • http://metunobe.22web.org/88145994512.pdfIn PDF document text
    • http://zolepop.mypressonline.com/cluster_sampling_method_with_examples.pdfIn PDF document text
    • http://sotarebesowula.medianewsonline.com/84194499053.pdfIn PDF document text
    • http://gipeturira.22web.org/kitchenaid_kdfe104dbl2_manual.pdfIn PDF document text
    • http://farozemirig.scienceontheweb.net/42330769799.pdfIn PDF document text
    • http://faponabon.mygamesonline.org/588785237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://garopawugalil.rf.gd/51998031759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/447e63ef-217f-4da6-8fd2-5ee3ab287f32/autocad_tutorial_in_urdu_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14dd0db7-d793-47bf-9452-acfc2d683137/cuantos_tipos_de_sistemas_operativos_de_red_existen.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/wordpress_themes_free_blog_personal.pdfIn PDF document text
    • http://fuguzametekobo.myartsonline.com/accounting_principles_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/58916825158.pdfIn PDF document text
    • http://gakilasefit.myartsonline.com/html_and_css.pdfIn PDF document text
    • http://gefuwaw.atwebpages.com/free_download_acrobat_reader_converter.pdfIn PDF document text
    • http://nidudovuj.epizy.com/adobe_camera_raw_free.pdfIn PDF document text
    • http://pivasif.rf.gd/foreign_direct_investment_in_brazil_report_2018.pdfIn PDF document text
    • http://fusozevukatamir.atwebpages.com/accounting_theory_in_bangla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd8fb50a-28b3-48b7-af1d-85c290e93b4f/aprilaire_thermostat_manual_8363.pdfIn PDF document text
    • http://dijuvunote.onlinewebshop.net/jixunupuro.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/tejukenekagu.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_off0000da77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA77 4984 bytes
SHA-256: 0bfaac63b2fb008f35998739bc2b858ece52bae200eb1463eb55b0d3edb6a310
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 10336 bytes
SHA-256: a7504ba39be6331bb1b1fc9adcccb54f209ac2cbf70dd8f2054c43ab18440d46

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