Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeb19a19148098a…

MALICIOUS

PDF

90.7 KB Created: 2021-06-06 23:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 041205f29400a20ee069258dccd5e40b SHA-1: 527014a3d7924eaba1425f42bcd5975106cc9160 SHA-256: bbeb19a19148098a309062637d763760e881049b88918c4477df0df92603e44c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. It functions as a link farm, directing users to numerous external URLs, several of which are hosted on compromised WordPress sites. The presence of these links suggests an intent to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://archism.ru/uplcv?utm_term=niagara+launcher+pro+apk+mirror PDF link annotation
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/tlu9bt77v7gur0j6u6al00b16h/56393444082.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/51859030741.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/14605ebf67969bf1de163a48e3391300/dudani.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2a07ecf9c---bupenasuse.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b803e3a8172---komepenijivawuro.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a18cf03e047---roxijazulevirubu.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/k53rgigi9avocdvgrkvc3gnjo1/lanawoge.pdfIn PDF document text
    • https://yssnewlessons.org/UserFilesTwo/file/puzemadevikelesesobi.pdfIn PDF document text
    • http://porpora.eu/imagenes/imagenes_contenidos/%5C/beremisuwir.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b67949487f---30277212488.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/69888414871.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/8b0f49861d1ed373d29a9b3686eb4a68/ronapezurolunesotadabibeb.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608999373ad72---70223706902.pdfIn PDF document text
    • https://bataretak.com/img/files/file/wepedegigazezaluwozo.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/c90fd9e58ccfddc8951a4da421d560bf/liburuwadegebufosit.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a942c6f5ef---texofated.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE730 6864 bytes
SHA-256: a65706f2a23067d2b7412b19c8414c0acef48b610e64555c17983a6d9b835da0
font_01_sfnt_off0000f889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF889 5200 bytes
SHA-256: cb8afc3c28b083de969e502d7edcd6b1fdb14c24a4b4bde88cd82e5106bfb7cf
font_02_sfnt_off00010a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A10 6224 bytes
SHA-256: d46f6f6afce3ccb4c0fdb700a5b469cfa700c56ea4a50dd16f4f7c2677042639
font_03_sfnt_off00012045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12045 10644 bytes
SHA-256: 01ff8ba611d461f41b73478b07833e919dac50f2eafef90dd4017780a9dda6d9
font_04_sfnt_off0001451e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1451E 16228 bytes
SHA-256: b9fa7cfffee3f2c6d0e175cf611576fab34e4aca638542c239293b0054b9cde5

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