Malicious PDF — malware analysis report

Static analysis result for SHA-256 818de16d514c23a2…

MALICIOUS

PDF

72.4 KB Created: 2021-06-13 05:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: dda780f45382f7c36113ea786c84dc87 SHA-1: f5cb02c14d4e434091129930537901f62e9123e1 SHA-256: 818de16d514c23a25d60c619120a760984bd25e786a1e0f73ad0a2542e00caf6
176 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS upload directories, suggesting a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains text related to 'logan full movie watch online free', indicating a lure to entice users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • 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://ketchas.ru/uplcv?utm_term=logan+full+movie+watch+online+free PDF link annotation
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/e7d229a84fabc94070536c0d435abc86/zulefinowivanowodo.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/453bee306a5b4b75ff8b552f11bc25de/tisanotubigi.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/8211jq98grqhbg66elvsgheb3v/9687177426.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/42176739884.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/476595493e577dc92374f8339f0922fd/59711185482.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/btdsjhvj154r7cisu0vu02ler7/72050601120.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/zowabigo.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085baf46be86---10634603317.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160989c5b8210e---90023844002.pdfPDF link annotation
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a5e5bf61c---19815767876.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0bf522d7e---zesujanad.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080cb4899c0e---70145196071.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e43a749649---kafigipikinenenusawag.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c67aee0dfb---43875611979.pdfIn PDF document text
    • http://starlightcelebre.org/clients/4/43/43e9139217482d7666ce300faf566241/File/mujutuvivo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD111 5092 bytes
SHA-256: 04aae086cc0384e5a12fd886c7bf2ddda49b117e8b3c715d5b328530826ba8d9
font_01_sfnt_off0000e250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE250 10504 bytes
SHA-256: a3364371c6d02441fde8503e0099ec9b94d37d28fe725ffef7856cc6d2ebc8a9
font_02_sfnt_off00010627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10627 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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