Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68547da90cb60bd…

MALICIOUS

PDF

89.5 KB Created: 2021-08-12 18:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 91d38bf6cd50516f2113792403307a68 SHA-1: a23bafbdd0654e1f4a1e284847e8cb313f21ce29 SHA-256: b68547da90cb60bd10813b8d1f18c390dd32479a58a11416f5b3ea80475d8659
156 Risk Score

Malware Insights

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

The file is a PDF identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting sites. This pattern is commonly used to distribute phishing content or further malware stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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 http://abwcrainhwy.com/uploads/files/lalibajabat.pdf In PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a09cda168d---10270661716.pdfIn PDF document text
    • http://aokisuper.com/ckfinder/userfiles/files/77889050276.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/2o8d8o9qb71j7drs615gl8bm35/waridarunavejaparaxasaxuv.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/edbf8b9e1ecb8940d1712a71b4429316/wodabi.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfa94b0f4f---fusakibigadakagaroko.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/30191366258.pdfIn PDF document text
    • https://lentes123.com/aym_image/files/54726212828.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a423e2d20aa---dedalubozuvub.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/aca62ce6109a0061ff43193b7649ad87/36928817400.pdfIn PDF document text
    • http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6abb5cb2---72658372498.pdfIn PDF document text
    • http://twfindia.in/userfiles/files/giwutugikipukipitono.pdfIn PDF document text
    • https://pakianco.ir/data/image/uploads/news/files/73747194200.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/fupikajoxudelir.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/73887251047.pdfIn PDF document text
    • http://congluc.com/upload/files/nubosizanasadekilanezexiw.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c303291adb0---notuvidogel.pdfIn PDF document text
    • http://dissanna.com/temp/fckeditor/file/48151313754.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160849771e2068---11666513941.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/dc3a393a0854d462ad70a0f6bde7b275/70666239247.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/bovijipimepawibo.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/48009663157.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+are+lions+adapted+to+live+in+their+habitatPDF 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

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_off0000fb0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0D 17136 bytes
SHA-256: b7a5f4975bcfb8b5e10a626a4e3736fd006ac4dc37a34d3eaa9085e9077edb4e
font_01_sfnt_off00012798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12798 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FAF 10772 bytes
SHA-256: 48ab7bee37c28cc262f7e420101e11e9da5996e2e8dec336bc3c59c80fe0c8a2

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