Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8ef8adaf9f0450…

MALICIOUS

PDF

75.6 KB Created: 2021-02-28 20:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b422e49859fc1b1bc653cf617c87418f SHA-1: 61ddcfdd428c8578f880a6dd818ce1a7f5df616c SHA-256: ab8ef8adaf9f0450081c9231f635ef3b7fe11e07699f65c72873d46200f30111
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.9717

Heuristics 4

  • 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
  • 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://druttle.ru/strik?utm_term=pippin+script+characters PDF link annotation
    • http://nigoguno.scienceontheweb.net/8618904063.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_6000b0dae80ab.pdfIn PDF document text
    • http://wajufogisabo.iblogger.org/expense_report_system_meaning.pdfIn PDF document text
    • http://erogancolumbia.site/georges_secret_key_to_the_universe_read_aloud5hxog.pdfIn PDF document text
    • http://proita.space/los_crimenes_de_la_calle_morgue_pelicula_youtubem2dr9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388157/normal_5febf091e8765.pdfIn PDF document text
    • http://fimugunidaditu.iblogger.org/ikea_dubai_catalogue_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/rubuxupab/jiEibKu/turbo_car_traffic_racing_game_download_uptodown.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/45856239243.pdfIn PDF document text
    • http://bopolubolef.mywebcommunity.org/15818274300.pdfIn PDF document text
    • http://gididowofugu.iblogger.org/36412191308.pdfIn PDF document text
    • http://kasyanbeauty.com/mesudamupeninibilajqz.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/deep_sparse_rectifier_neural_networks.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/medio_de_comunicacion_mas_antiguo.pdfIn PDF document text
    • http://nawuxek.rf.gd/zadafobenokumidezubila.pdfIn PDF document text
    • http://jojomuge.epizy.com/princeton_review_ap_calculus_ab.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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