Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af2383669797352…

MALICIOUS

PDF

86.3 KB Created: 2021-07-30 11:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 3a648b2707bcff2b9d1858b5e249b829 SHA-1: 67cddaeb0ed9da7f0a7b6d6cdcb9542cc0dbcd44 SHA-256: 7af2383669797352b570f227ac581bc35faff1e844f4748294256424a6e59d38
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites and potentially malicious PDF files, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms on disposable hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://drafthe.ru/uplcv?utm_term=halimbawa+ng+maikling+kwento+ng+teoryang+romantisismo PDF link annotation
    • https://amgaa.org/temp//files/442206510.pdfIn PDF document text
    • http://www.amedna.com/userfiles/files/98758294426.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ce7c3f101---66404197186.pdfIn PDF document text
    • https://satybharat.com/ci/userfiles/files/jelaki.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/rejevixefapudaj.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/a5f5fb94ef67f8139c7250c2927ce9f9/89292528004.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b200d7d44e7---25310296517.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/jezomididexopadebetaxev.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/58530339677.pdfIn PDF document text
    • http://hccc252.ca/clients/e/e4/e484b38507f190a955b66748903449e1/File/96611990867.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/jujisuvevakufedefalix.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/solamifixaxubov.pdfIn PDF document text
    • https://bititechnika.com/uploads/file/korosizifetubadaj.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210626055332.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210623011424934.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a28d318d7a4---75290693962.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d7dceda484a---9035006054.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fc146a138---pudigituzesuperixox.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e0f4ccce1cd---bazurekowu.pdfIn PDF document text
    • http://tantex.org/tantex/tantexuserfiles/file/11974266344.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/mipakisitobewetopotovu.pdfIn PDF document text
    • https://biorenta.lt/ckfinder/userfiles/files/52324896767.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001060a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060A 16816 bytes
SHA-256: 8f9bcf74b1aca847a4cb007c299e688f1d278d5551fc0ebf444e6cec70147f36
font_02_sfnt_off000131bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131BB 10876 bytes
SHA-256: 598087fcdc4124d5d823b9fc84894c8c93dd1c9ed0b5781bea02f51edb98755f

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