Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6266527ec2684f…

MALICIOUS

PDF

71.8 KB Created: 2021-06-14 18:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d124f1ce7c292fe2cc041d1b2b5f4a4e SHA-1: bd8064e4a4ffbd19d29534b60b4eb939d15ef6d8 SHA-256: ed6266527ec2684f26d86a09048277b3cf07cbca061d7a7387ec0808750d4a4c
156 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, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://laborke.ru/uplcv?utm_term=anime+instagram+story+template
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/4bad52e6d6358cd4d6def6301f3f8780/kesinatafixixoluruse.pdf
    • http://hydrem.ru/images/file/zegejunasamusugakoko.pdf
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5e0606bd2---porivej.pdf
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/hu782vuq8kkg1sojftm995gacm/34411521441.pdf
    • https://audit-advisers.com/userfiles/file/renuxetisulejofupopi.pdf
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/382432bbbe3599aeeda6064e1746bbb7/malinesamimafema.pdf
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d07f17c8a3---56487865725.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160779eb96d5e7---25899288951.pdf
    • https://cottingham-group.com/cufiles/files/demuva.pdf
    • https://cowichanseniors.ca/userfiles/file/zazisaketidenu.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160725701d7164---nesiworevesatabiluxux.pdf
    • https://medicentrumnz.eu/medicentrum/files/file/pujuvavajesale.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b942b1cc118---diwedi.pdf
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/ca297adbecd9fe8b33c6813a78fd3092/vibulolenezudutobuzileteb.pdf
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b6b362328---67117200991.pdf
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/08c5e104f3984db4c249de3a5fb19478/22157144896.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daca.bin
ecfa4d22717a36cf7b3b265005d254fc3c5cce874b19374b7cd97954f64f6784		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 5232 bytes
font_01_sfnt_off0000ec8a.bin
c89f54b3700338642bbed74161bfdadc96ed5a747594c5ef5e42da1fcdab5340		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8A 10824 bytes

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