Malicious PDF — malware analysis report

Static analysis result for SHA-256 180032bf1069457a…

MALICIOUS

PDF

84.7 KB Created: 2021-07-09 16:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: dd0f52454e6d35d9d1f30a6fd9cf464d SHA-1: 6d6856723117506664fa08526b2b7bab9e2b38fe SHA-256: 180032bf1069457a99a96581a5eaecaba52b95048aba8849ece3bad41bcc67f5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The primary purpose seems to be directing users to external sites, potentially for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://pistant.ru/uplcv?utm_term=gym+contracts+and+the+consumer+protection+act PDF link annotation
    • https://weddingitaly.jp/images/file/funupekananav.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/ms977uol67llbv5kb16uo5qhg3/kotafavo.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/80218670448.pdfIn PDF document text
    • http://indagosrl.it/userfiles/files/punekuxifasixobinidaradin.pdfIn PDF document text
    • http://sunarfactory.com/userfiles/files/gowoj.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/4udl94q0brji38prp2um335tf9/8387807785.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-5/file/94260042450.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9911dc8ae---bopegedejovak.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a3b50a8881---wapubakaxoserijabik.pdfIn PDF document text
    • http://king-pro.com/userfiles/files/30665857544.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/f41651dc8fe9cc2e6a461e1798af66b5/67461444583.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a924276e013---29212821126.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/4b04f8a12715e24c41f9fa4b3ecc812a/38978727942.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/a6836932679147e82a75c08bfdca367d/82889141221.pdfIn PDF document text
    • http://easyliveconstruction.com/ci/userfiles/files/36973317461.pdfIn PDF document text
    • http://donghocasiochinhhang.net/uploads/userfiles/file/benekimikojegodidurod.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3d571f7d1---kiwevesedejekegola.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160d377aa45eaf---vamaluvelopemevukojefi.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/f5adf61e16d66093fb41edc769d451ae/90845258308.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/4262bab940ac731b5c77c0a24cb011b3/471758508.pdfIn PDF document text
    • https://hocngoaingu123.com/upload/files/xulibawopivodu.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6237c4931---jedogodujigenopipujuz.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/zevanum.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/04d096ee4936115948e1d44e9bab969a/xukamofar.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE716 10988 bytes
SHA-256: f010f0f7b5cb61f3f4e291132ba1a825819bb4037ea8a7d8b3cd97a43ba1321e
font_01_sfnt_off00010074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10074 17164 bytes
SHA-256: 39ec211a205be3e28fd432b796f11b3def37b81f4832058945cff9dffc17c9e9
font_02_sfnt_off00012d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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