Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f27df799840b53…

MALICIOUS

PDF

40.2 KB Created: 2021-10-03 01:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b568e1934b9109e676f9cbc62c0a62ce SHA-1: 240316eec46d06fb6cd67b5bd28e489167784f92 SHA-256: 53f27df799840b5342525ac88fad2598669c6328c92524f7847f6cb323ada59a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size, image-heavy content, and embedded clickable links. The heuristic 'PDF_IMAGE_LURE' indicates a common tactic where a screenshot is used to disguise a malicious link. The numerous external URLs, many hosted on disposable domains, further support the phishing or malware distribution intent. Although no scripts were explicitly extracted, the nature of the PDF and its embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8553

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://smidgel.ru/uplcv?utm_term=story+with+questions+for+grade+5 PDF link annotation
    • https://alsultantrading.ae/userfiles/files/55882765718.pdfIn PDF document text
    • http://xn--b1amishc2fb.xn--p1ai/ckfinder/userfiles/files/surejozureja.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/59727363083.pdfIn PDF document text
    • http://rivebistro.net/ckfinder/userfiles/files/72696403125.pdfIn PDF document text
    • http://ficfart.org/userfiles/file/mumobunutemuvopumujipi.pdfIn PDF document text
    • https://vr-spagna-20.effievirtual.com/galeria/files/96994643730.pdfIn PDF document text
    • http://tutaylamhet.com/storage/ckfinder/files/famidoxotagexusotubo.pdfIn PDF document text
    • http://luxlustry.ru/img/upload/zinebefanorise.pdfIn PDF document text
    • http://wuxihemei.com/ckfinder/userfiles/files/20210928_042438.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/bgje732eb7inouge3e3k9e9l0q/51069193478.pdfIn PDF document text
    • http://loscogliodifavignana.it/userfiles/files/72601977775.pdfIn PDF document text
    • https://pharmawell.eu/ckfinder/userfiles/files/55636957787.pdfIn PDF document text
    • http://hoanggiaphatland.com/uploads/image/files/zimaxutudor.pdfIn PDF document text
    • http://etcpremium.com/userfiles/files/gosemavoxora.pdfIn PDF document text
    • https://serka.com/serka/upload/files/43663195299.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/fosalipukimadobiwi.pdfIn PDF document text
    • https://apsco.ly/userfiles/files/60206783610.pdfIn PDF document text
    • http://pcserviszlin.cz/ckfinder/userfiles/files/20030814531.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/28135308116.pdfIn PDF document text
    • http://mansiya.com/uploadfile/files/69224609341.pdfIn PDF document text
    • http://dailymaytrogiang.com/userfiles/files/nosidovurem.pdfIn PDF document text
    • https://seas2010.cienciaevida.pt/site/upload/file/vunuza.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/fileIn PDF document text

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