Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38013c347439d03…

MALICIOUS

PDF

67.5 KB Created: 2021-07-05 18:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b0a590e60dde53a7e2d069569223cd57 SHA-1: 61e2c91607fad20767339dab5331a457244c2ebd SHA-256: c38013c347439d03d95a1d20ae3c885ac9baf4eac09a12d085814bd871e14a7d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are hosted on compromised WordPress sites and appear to be part of a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure suggests the PDF itself is a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16084311ce78c9---32181461845.pdf In PDF document text
    • http://cesmclassof68cheyennewy.com/clients/82478/File/jidatupuduvimijebufodu.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/77794436575.pdfIn PDF document text
    • http://chnli.tw/CKEdit/upload/files/37370213911.pdfIn PDF document text
    • https://baobihungphu.com/media/ftp/file/81870840209.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/nuoaarpao8osc6543kivjej59b/xagopekusejubizoxaxizeso.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160a72efc1d032---93610012597.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/favagezunomupafafenilopap.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/viwerap.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/kale3eeb94enei7e82jsl8vuoh/52864663070.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b042172e5cf---nowopenikifateboxel.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a24b2a8579c---24193990413.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c42fad0c996---75664818773.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160711a2917c16---xisujikaloxogifojaxaj.pdfIn PDF document text
    • http://donationwebsites.com/clients/6/68/68901b9e08e997a22fc64c74502b39ca/File/wazaxezopokax.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/5f3f9d14e0e6649f496625e06911c37d/93027406367.pdfIn PDF document text
    • http://yorktownhs1987.com/clients/57482/File/14555731070.pdfIn PDF document text
    • http://karate-talence.com/newsite/userfiles/files/digukajavaneremin.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609843bae0f8f---33906834052.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/7ba1326fb4a4a71b3e2c63ca25ecae59/55054623720.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c03114b438c---tixaxale.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8ae819d1d---53358992397.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=space+sweepers+full+movie+sub+indoPDF link annotation

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