Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1114e9e6f63fcc0…

MALICIOUS

PDF

75.7 KB Created: 2021-09-01 20:25:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: af001a78853ef1a74f49e93fa2326e98 SHA-1: eff932c12802f42c3f12204376c022ab43134ec7 SHA-256: d1114e9e6f63fcc02f6c638ebee554e197288a7dfd428e017b38e2c276860d10
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other domains, likely to lure users into downloading further malicious content or submitting sensitive information. The document's structure and the presence of multiple external URIs suggest an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://catamma.ru/uplcv?utm_term=sub+stop+roselle+new+jersey PDF link annotation
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9abaf0525---zakudepujap.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086cf63c0579---vupanapobumema.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9658cf45b---99477368406.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16076421a185f3---zobifisu.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/54858916081.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/c3cd77edb1b75d4c7ffdb6cfa833ebfd/6172896020.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/935396820.pdfIn PDF document text
    • http://simonide.org/userfiles/file/geniropasakanapepa.pdfIn PDF document text
    • https://hizlipin.com/calisma2/files/uploads/lutitowunadimitiwozunuw.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/3a0331e5dfa0d81ae9d5ecc8961ec57a/sexumoxoxepifapuwawizafeg.pdfIn PDF document text
    • http://stigstudiotecnico.it/userfiles/files/pivagalinarixisawojonodon.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c53d9e8230---fewuwixej.pdfIn PDF document text
    • https://kcharp.com/ckfinder/userfiles/files/fanuforeniposibol.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/f1c5f8dd239e1079bbaae8c04a9936fa/towekedaxakini.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/gifirurikulazor.pdfIn PDF document text
    • http://patriabrno.cz/userfiles/files/mibosanonabovupositul.pdfIn PDF document text
    • http://berrybucs1973.com/clients/3/3a/3a2d6910be1067feaf6dc79f90d505e0/File/dudupegowufobi.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd55ce1f20---kegukimovojabupiz.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa239a315cd---daxujitebedazedelemez.pdfIn PDF document text
    • https://zaindu.drogomedia.com/files/galeria/files/17971596456.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160810efd4b584---masigaritavorivatobu.pdfIn PDF document text
    • http://blbr365.com/userfiles/file/1622134571.pdfIn PDF document text
    • https://hantverksakuten.se/ckfinder/userfiles/files/28721767407.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_off0000c3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C9 17436 bytes
SHA-256: 43fc3527d7979d002e265979ff59aef8472fe17d3f0198544d91f8756a50a486
font_01_sfnt_off0000f0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000108eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EB 10636 bytes
SHA-256: 414f2a6cb74ac1517afe80739d87def7670d1498efa12c6072740a09b9b75d23

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