Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbea9e3f328d00f…

MALICIOUS

PDF

74.2 KB Created: 2021-09-02 07:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: af4e4d03844aad461fe4e5a9ead69c61 SHA-1: 8f84216963e96029cb5da66e1c8c8106807c611c SHA-256: 2bbea9e3f328d00fb2df430c758d22eabd385e984eed759423b5f37d34c852d8
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://mpu-beratung-brendle.de/userfiles/file/46064109251.pdf In PDF document text
    • https://cicadit.ro/UserFiles/file/13719945793.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160996e780e3d2---zuxesa.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/zivuvopo.pdfIn PDF document text
    • https://avenue102.com/uploads/file/fadekuxodig.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/2bf2eb20e38c0eb7dca14c4d1bdd67c3/68613042628.pdfIn PDF document text
    • https://geniodelweb.com/file/49389988526.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/72721349260.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2b52b11e4---26133451332.pdfIn PDF document text
    • https://kompaspt2.com/contents//files/80600168425.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210530_2C662DC5F24E1EBE.pdfIn PDF document text
    • https://btsis.com/upload/ckfinder/files/66744935011.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/56802778046.pdfIn PDF document text
    • https://jodhpurtravels.com/nbloom/fckuploads/file/82420093717.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bccd58557f3---jixeterev.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec96a76562---4914774300.pdfIn PDF document text
    • http://chlahb.com/uploadfile/2011/new2011617/files/2021/08/20210828165157.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a78761eb69a---30688972557.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/94c8c58ecd16ff58af513621c36e98e6/55238371962.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1f6747407---53913963534.pdfIn PDF document text
    • https://aprenda-atdi.com/uploads/files/suzatudilaregav.pdfIn PDF document text
    • http://kdekdyjak.cz/data/wafuvejupuwegabewodaselu.pdfIn PDF document text
    • http://grandchainfamilyfoundation.org/clients/85333/File/45621797792.pdfIn PDF document text
    • http://dansensvenner.dk/imagesfile///kotosoremaguwemujujox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=from+rtf+to+pdf+onlinePDF 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_off0000c1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D0 10308 bytes
SHA-256: 215417c031bbf7463faf326d65bb619cd846eca360969e303420c0e873a2de93
font_02_sfnt_off0000f0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E9 16420 bytes
SHA-256: 0332792af693a3b2a3d7f01583983428a601f0fa8caaaf68be5bfe6a30fa6698

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