Malicious PDF — malware analysis report

Static analysis result for SHA-256 412b112d611f1a54…

MALICIOUS

PDF

84.5 KB Created: 2021-07-15 09:29:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 124d8642977a0ee20640d7fb04f206e5 SHA-1: a58c6a3c27d8b831b9fe183888008feac107e23a SHA-256: 412b112d611f1a54f5d3857615004dc5829d90a476d54d62faef901a488ee833
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://haumeaonline.com/userfiles/file/namiketajapadepogedovevu.pdf In PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/f27d42ef5b1dfcbbf881b734b598039b/xurapewog.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/seseboxalugan.pdfIn PDF document text
    • http://noithattamphuong.com/upload/files/67068346260.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e06413e7e---67756691677.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/gelovojiberojuf.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/q7b0ts5p2m1ktk5kj7ejoritsg/piragakeluzevutixorokadaj.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/5eeda5497d3b764096906b8eec736a94/bekulitigirinuj.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0b47790dc6---mafifakowusuberituxofet.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/88cb88c6d16e8fc7532602babd09e3b2/zaboguke.pdfIn PDF document text
    • http://arqing.es/ckfinder/userfiles/files/28996834549.pdfIn PDF document text
    • https://arerp.kr/data/file///datomuna.pdfIn PDF document text
    • https://bbu.vn/Images_upload/files/7427446355.pdfIn PDF document text
    • http://maroba-zirndorf.de/file/fodiwuxezuresimejum.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083dd5c04cf3---nazanuta.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/gulejid.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/7ce10cfca69cb79307ebba7180768ec6/kujitagabezorupamefuzupeg.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/77f8f184a5a201b1d443645f0031a97f/zivomutulun.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/f2e9fc826c513ff38f61b4ea4cb2bce3/75797371741.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/19328706641.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6cea7c8bcc---xepirorin.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608efd2f46362---76889127336.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=excel+vba+filter+data+and+copy+to+another+sheetPDF 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_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 11120 bytes
SHA-256: ed70c97906dea5f8e14460eb11891bb43ce329ca0017e0cba3a3f67fedc68a2d
font_01_sfnt_off0000fe41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE41 17696 bytes
SHA-256: c9148916c3168fa6dec9a404ac82d81b1320da904eac46a83d7cddeb51752ce3
font_02_sfnt_off00012c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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