Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2dd5b9344ecedd…

MALICIOUS

PDF

85.3 KB Created: 2021-06-30 12:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 8360aa51550997f743984d869aa5961f SHA-1: a997a58c3be528fd1f1604ff7f933de4dbb11786 SHA-256: 7d2dd5b9344eceddc762dabb1c349d2f58f7cde2a711787267ec8b1d65daa8dd
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to host malicious content or redirect users to phishing sites. The presence of numerous unknown URLs hosted on various domains indicates a broad distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe79154932---60764888277.pdf In PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7976e39c9---40506614507.pdfIn PDF document text
    • http://luvnchrlysenglishtoys.com/clients/861429/File/27362059912.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160861c66eae0a---tivugut.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/d6683fa2dfc6b39e136af0d5972c20f0/51679577388.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/mutibuxazezugodikilu.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607f810343857---falir.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/26bddd6799dd4f1190a87390b77027bb/naropevef.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607987caaddab---ramomerupakowirozepajozet.pdfIn PDF document text
    • http://alda.pl/ckfinder/userfiles/files/48970552609.pdfIn PDF document text
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/91473550294.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/aru8fpdvis43g8moln40i8u1e9/11798241791.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/3op605s0vci87ujica92pdd9gq/zidewedavokis.pdfIn PDF document text
    • http://megat.pl/uploaded/fck_files/file/1001542649.pdfIn PDF document text
    • http://isystemlab.com/admin/ckfinder/userfiles/files/426819857.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/eb5b99a3ae8c79cca0d4c9834aa772be/wubifodiwofimononivimog.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb6b37ec85---wapemufufibigax.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/38964124039.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16093cfdc142fb---62565299644.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/taxagixegamev.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607afa8a14272---baxoz.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/gipapizopabugabetovo.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/ca14790b336df51ebef734fd98c49c7f/viwabusupizifawiza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=3+applications+of+chromatographyPDF link annotation
    • 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_off0000e924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE924 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001013b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013B 10984 bytes
SHA-256: f973fc05c73180239755fea759b4167776c3b61cc742b3a0b9db54d1144ef8e3
font_02_sfnt_off00011a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8F 18528 bytes
SHA-256: 15b2b44d48ff8e38e4877ed8de6e6de3a5f254dad70fa7bf0bdd4fbf7dcebc3f

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