Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eba0796e3c7e85f…

MALICIOUS

PDF

78.5 KB Created: 2021-08-20 05:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1fc6aa15a0ec18f904cb5bf59d0631f4 SHA-1: 09dd5007bfbb73bc4ffe51c406426db290f8aec6 SHA-256: 6eba0796e3c7e85f330c0f66917812f59d3184ba41d5c8a389d3bd906c5f0e84
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, specifically flagged as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, including those hosted on compromised CMS platforms. The presence of these links suggests an intent to redirect users to malicious sites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://hijaulumut.com/contents//files/11430330676.pdf In PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ed912fad46a---26745075488.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a1cc033577d---roride.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/2043066369.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/temagipuvodexejide.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ddf8f6baa8---52373968474.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/15397639816.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/dd9c236cfd5bf7da3d8228ff69f1107e/pibixusavejatugeseva.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/1608d12aece4f2---47892587148.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/kipumopuvivelepopej.pdfIn PDF document text
    • https://aglogistics-bo.net/userfiles/file/duzabigigunive.pdfIn PDF document text
    • http://xn--l3chcucnqd9c0eua7b1k.com/user_img/files/winirorijasavebumagexedi.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f086fd3f12---zuraluvikapelo.pdfIn PDF document text
    • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/98962203495.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/nakagufufesu.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e7c9bb50d69---nokegusemugujabogek.pdfIn PDF document text
    • https://www.crqp.ch/ck/ckfinder/userfiles/files/ponigerodedagu.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e814c63fd---80979108030.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/13511275183.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609074904f037---8216157592.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/85199984239.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608484ca66d89---37672103630.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=livro+feminismo+pervers%C3%A3o+e+subvers%C3%A3o+pdf+download+gratisPDF 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_off0000c6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C9 19348 bytes
SHA-256: 1877f90515594c98c9c4661f2a54445e743728f07a54ca17b946ba04bd2a9c2b
font_01_sfnt_off0000f6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D2 11456 bytes
SHA-256: 56f42f62f399e6ae194a46759c8b4d5456b12742deb446fb145b38f522434f35
font_02_sfnt_off0001111c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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