Malicious PDF — malware analysis report

Static analysis result for SHA-256 0206b89079753a80…

MALICIOUS

PDF

90.0 KB Created: 2021-06-25 17:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b7e50aaa496f4048ae42ed1e220c5468 SHA-1: 53f48029e875487ce67fc5e9866756b1ee812b03 SHA-256: 0206b89079753a80679033f2f7727d1a8a17819173f656637c647b9fc34eb88b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of numerous links on potentially compromised infrastructure indicates a deliberate effort to host phishing or malware distribution pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d109c8be3b---wakesove.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa70b713e78---38834418103.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/554b9144772ac83d1bf0c884abc6e4f6/wusigawusaz.pdf
    • https://cowichanseniors.ca/userfiles/file/7948781942.pdf
    • http://castudio.eu/userfiles/files/88010824704.pdf
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878ecf11e4d---75118160220.pdf
    • http://fittbike.hu/files/file/98135158779.pdf
    • http://dentherapia.hu/files/file/55833781143.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160ce88d654e21---76378777213.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bc2f33e179f---45163331090.pdf
    • http://tamker.hu/userfiles/file/95062233913.pdf
    • http://bradleyhillsapartments.com/demo/uploads/contents/file/85098797737.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5c4a27c255---710836140.pdf
    • http://absolutelyneon.com/userfiles/file/kiwisazogizenofar.pdf
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/1f7c2a9e657afdf2e568a4a0398500a4/nexusutelu.pdf
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088898330f06---fonalafir.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/59f088d2ac9b89cd3bb284aaa8c82c8e/38048447048.pdf
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/ftj0quaufutkp3hre59j6goac1/34151497679.pdf
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/1b41c9133fe6a7ddaa674fb88d5f78a7/sixifaxewupu.pdf
    • http://deforma.it/userfiles/files/ketizedixuwizujuse.pdf
    • https://simplehome.ro/ckfinder/userfiles/files/896537616.pdf
    • http://suamayin.biz/userfiles/file/xorugigedakaneririgani.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=bible+verse+about+anger+tagalog
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe3a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3A 16792 bytes
font_01_sfnt_off00011651.bin
81e71c3a66aefe98e963926b7b6e75c847be6a42e0441b9d65df41d3506b7821
pdf-font-stream PDF embedded font (sfnt) at offset 0x11651 10644 bytes
font_02_sfnt_off00012ed5.bin
223453c6644dfbadc7bffdf1aeae88f4c2570b6db09372fcb0983d5b463a1bc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED5 16932 bytes