Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c89b7e1e8c0177e…

MALICIOUS

PDF

194.4 KB Created: 2021-09-06 10:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c69ee9dc514e14099b8a0a573b4214b3 SHA-1: 5023b63548d370d1260b7b16b2c91b1d159532e2 SHA-256: 2c89b7e1e8c0177e17e5f99803f434bbb629ceb361eae2e7801ef6da2f46fd1b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress sites and other domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://oniceh.ru/uplcv?utm_term=hibernate+3+documentation+pdf PDF link annotation
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ea21bc575---38630870448.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a607fc454f4---batutupuw.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/xizukukur.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/0e20q1r57mpvr7fsrkqe4f46pi/tufifakenepipejejonobul.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/23775644099.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160b5935254336---turip.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/puzisusagajagomuniv.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c09f2a3a37---refiwogukenanalomuxow.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/0985d6a9b8433fe4d1ebad24597b9875/57708937479.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16094c18f00367---nowakijububosuvoro.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/teramujuz.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/blqsguqlvi2qiab09mlspt2q0n/21763526195.pdfIn PDF document text
    • http://short-story.ru/upload/file/mubigozobisave.pdfIn PDF document text
    • http://teraval.cz/res/file/kitafimawafiwavebuzijesem.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/39747154596.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/274977395e9c2eb0187b3199bd1e01db/80088332325.pdfIn PDF document text
    • https://rarahil.org.np/ckfinder/userfiles/files/kumadarixoke.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071661c2b3a5---60553470097.pdfIn PDF document text
    • http://theprofitnesstrainers.com/userfiles/file/nexijigesokeferigugozed.pdfIn PDF document text
    • http://casaatlantida.com/userfiles/file///38967925184.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d15fd48ba2---miwokezalisawazemejetaf.pdfIn PDF document text
    • https://floresdeserrezuela.com/aym_image/files/danuladinalifasevijavej.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/6670208466.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/c554ba0f3f3cd16ea606c99d63b58ec6/12486530601.pdfIn 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
    • 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_off00029319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29319 10972 bytes
SHA-256: 941e13e7f8852b8c244052952f937785f55e85dc079d18fd92713d269573ac2a
font_01_sfnt_off0002ac53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0002c465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C465 20540 bytes
SHA-256: 2a373b1d7735c7e49784ff1d99ef2be2a38550648d5354ff14656a7e36f2e594

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