Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f49e8dbd78def4…

MALICIOUS

PDF

50.3 KB Created: 2021-03-17 18:29:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f474494409811ed7350aa8814e1f3ffc SHA-1: 40c5f7f2f5d68228890c4f17ebabbf570271b6a5 SHA-256: 57f49e8dbd78def45d4752d3fb7339cff203a4368aa1ae108ef11a88e4a80ffa
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on disposable domains, indicative of a link farm or SEO manipulation scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

Heuristics 5

  • 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.
  • 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://gimoguvi.ru/award?keyword=joindre+pdf+facebook PDF link annotation
    • http://nunobuzipame.medianewsonline.com/luxakowu.pdfIn PDF document text
    • http://suwufexez.sportsontheweb.net/39178952633.pdfIn PDF document text
    • https://cdn.sqhk.co/runetonorox/dgiRjaF/sokotolenov.pdfIn PDF document text
    • http://muzesumulel.getenjoyment.net/tafobenugovixelufixojejek.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/2hcaZOE/8276586359.pdfIn PDF document text
    • http://gelonixaj.rf.gd/online_business_plan_template.pdfIn PDF document text
    • http://lowazuxakosilal.epizy.com/microsoft_sculpt_comfort_keyboard_and_mouse_driver.pdfIn PDF document text
    • http://junenizexi.epizy.com/jafaxoxekuxibobotowoni.pdfIn PDF document text
    • http://bagegamejejupu.epizy.com/50190129443.pdfIn PDF document text
    • https://9907981b-0bc7-4fd3-a434-169f7cdadf42.filesusr.com/ugd/575363_f92f4324524e45b8a302b4f400e765ca.pdf?index=trueIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_edf9deb9e4c847b4a45feaad5bc832c9.pdf?index=trueIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_ca0c0d32f740432db566d9cb35cebb29.pdf?index=trueIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_7c42ff5699584b3790974182e544b665.pdf?index=trueIn PDF document text
    • https://8717ace1-8174-44a1-9f98-e7cbf9e9ed94.filesusr.com/ugd/14e3be_e4abec6aaa824a4180a20a52cd702ac5.pdf?index=trueIn PDF document text
    • http://sovogezo.atwebpages.com/pobumizeni.pdfIn PDF document text
    • http://zibelasavu.atwebpages.com/nuxijiw.pdfIn PDF document text