Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1216a6e8fc155b9…

MALICIOUS

PDF

99.4 KB Created: 2021-08-03 12:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: f172820d6a3e582e543ea273ec12d111 SHA-1: 13f27850dd0b0b8ae41be6ef58da94544b2a52fd SHA-256: d1216a6e8fc155b98a819084481da50b012521bbe45fd59067b3ec85513dfccf
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file functions as a link farm, directing users to numerous external URLs, some of which are hosted on compromised WordPress sites. The presence of urgency and download button lures suggests an attempt to trick users into clicking these links, potentially leading to phishing or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/uplcv?utm_term=hack+dragon+city+no+human+verification PDF link annotation
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/369c261c80f38e4361272cb30d07680a/vadejimawibarupoxa.pdfIn PDF document text
    • http://iberia-ex.com/images/blog//file/88109172958.pdfIn PDF document text
    • https://hitpoint.tw/userfiles/file/69030200258.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ba2b8eb7cba---jozif.pdfIn PDF document text
    • https://mahae.hu/files/files/75923368353.pdfIn PDF document text
    • https://people11people.com/uploads/File/54794590052.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/40204b958ae87ba16b12952daecbca7f/savisate.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cac0c847cd---40054366704.pdfIn PDF document text
    • https://brakos.it/file/33600843072.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a721ed5dfd0---kejimepemalepi.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/96748614486.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/ijcc2jfnqm6t1k95ffi9vodpv0/3042897266.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160f03ec10f439---gozilovazo.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20210712212455.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/21a3d98aa60525f95956f1e0c67f978f/2233348543.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/f04tfkhb10v5vga8k9nj4hr1n3/tofumutomovum.pdfIn PDF document text
    • http://hanleyresources.com/images/40400317260.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606dd88dc5e94---81915934261.pdfIn PDF document text
    • http://galantemontagnana.it/ckfinder/userfiles/files/97924455532.pdfIn PDF document text
    • https://bachson.net/upload/file/nenexemix.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/uiqk3efqkbroi780sca9ckeb1v/45190390652.pdfIn PDF document text
    • http://tivati.com/uploads/userfiles/file/44581491086.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_off00010bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF2 11072 bytes
SHA-256: 881f595a260993a856a27dfb0e029a079947cf1e73c0574ea92e2c8904113fcb
font_01_sfnt_off0001255d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255D 24708 bytes
SHA-256: ca075f4491a715946f34fb3ef38e6985a558d345da72203638e1c7baba3b8ad5
font_02_sfnt_off00016635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16635 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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