Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1fe587e35dc74ef…

MALICIOUS

PDF

83.5 KB Created: 2021-04-24 21:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13a2ef2c59c4fc3ee34b4d95b5c2846f SHA-1: 347cc8317f643502214af5d6a120a3205da84ecd SHA-256: a1fe587e35dc74efedf1bb7ae5c4c4f227d27f9021355c61baf6064e1b2a4219
126 Risk Score

Malware Insights

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

The PDF document contains a lure related to Verizon router issues, directing users to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit user curiosity and lead them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=why+is+my+verizon+router+blinking+yellow
    • http://xivazokib.medianewsonline.com/74770646522.pdf
    • http://kemamibuke.mygamesonline.org/yamaha_yas_203_vs_209.pdf
    • http://bitalotava.scienceontheweb.net/94104223519.pdf
    • http://tobufupevujuma.mygamesonline.org/tratados_y_organismos_internacionales.pdf
    • http://werikipirojenob.scienceontheweb.net/zoxizufotajobonaxug.pdf
    • http://ing-jobs-opportunities.com/67212870434ludpd.pdf
    • http://sysfix.ru/samsung_xpress_m2825dw_solid_red_lightavjxo.pdf
    • http://jozipuvuwuzaj.mywebcommunity.org/what_was_the_march_1917_revolution_about.pdf
    • http://pixidilivutep.medianewsonline.com/passport_renewal_form_ds_11.pdf
    • http://wijetaz.mypressonline.com/75087150831.pdf
    • http://davupopebuwiser.sportsontheweb.net/11281313220.pdf
    • http://rojibitakuvekuw.scienceontheweb.net/50723514201.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zegetafirotazaz.atwebpages.com/wagoratixezujufowowo.pdf
    • https://s3.amazonaws.com/pizexopenaxu/medepuperigajugari.pdf
    • http://vilatelisoto.onlinewebshop.net/fender_gb_hot_rod_deluxe_112_enclosure.pdf
    • https://s3.amazonaws.com/bovenotojitowe/prayer_rain_olukoya.pdf
    • http://zuzopejorexa.onlinewebshop.net/96883011916.pdf
    • http://wumugajus.onlinewebshop.net/liste_allergene_und_zusatzstoffe.pdf
    • http://dolinoko.atwebpages.com/8916584137.pdf
    • https://s3.amazonaws.com/lovetijif/sobugitexogukifesina.pdf
    • https://s3.amazonaws.com/gavapozalilup/lesson_plan_outline_template.pdf
    • https://s3.amazonaws.com/jazuravazaguz/71066476715.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010621.bin
e86893c464f1d1d9b710c35fb02b15c4eccc1fb6a18a11794189923e861b7661		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10621 5412 bytes
font_01_sfnt_off0001188f.bin
123be5e47a1790d41310f9a37a5eb1de8a6c70225ec64a8dc39a2ffe75db07a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1188F 11056 bytes

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