Malicious PDF — malware analysis report

Static analysis result for SHA-256 229b36e05e23d98e…

MALICIOUS

PDF

69.3 KB Created: 2021-09-28 04:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7710d03cd3d0482150ec84a0c4b4b08d SHA-1: 5445a605cb5db268f457539a5e2741e5d806ab1a SHA-256: 229b36e05e23d98e7119b2224f039677d76f5d6d783a3e1f05e6a36b833c0ea8
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://abwrosedale.com/uploads/files/wanexosuxowapinufodukevi.pdf
    • http://applexin.com/ttpsea/files/file/nilojawakiwexufaduv.pdf
    • https://shaplaconsulting.com/app/webroot/ckfinder/userfiles/files/zuwilatumefukifafixekajig.pdf
    • http://fkhd.cz/data/img/numamowivopudoreg.pdf
    • https://medtek.vn/storage/file/givuzuwirisewo.pdf
    • https://makanbanyak.net/contents/files/97702320461.pdf
    • https://searchlink.org/userfiles/file/79651445666.pdf
    • http://fitviewer.com/files/file/nuwax.pdf
    • https://speedwayinfo.hu/uploads/file/25306229323.pdf
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/161504cb8c2c66---basamajuwowijizewiteme.pdf
    • http://www.hgekc.com/media/userfiles/file/xipolipoku.pdf
    • http://elsekmont.eu/userfiles/file/75113306485.pdf
    • http://mellorymotors.ru/admin/ckfinder/userfiles/files/78982581368.pdf
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b3ca5eb456---95321445895.pdf
    • https://zoomkish.com/basefile/zoomkishcom/files/getapedoz.pdf
    • https://hiroyoung.com/data/files/ladigipomume.pdf
    • http://keemunblacktea.cn/uploads/file/051604405151.pdf
    • http://akvatoria.by/UserFiles/files/doxadusovu.pdf
    • http://blekinge.boj.se/uploads/userfiles/files/tutimemoku.pdf
    • http://laduses.nl/image/file/moronegukadobunir.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16140fe6246d3d---komijol.pdf
    • http://omeofest.eu/userfiles/files/deramogedozafebi.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=latin+words+that+start+with+p
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae9d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9D 16792 bytes
font_01_sfnt_off0000c6b4.bin
01741ce61fcf81086aaf394e9d9761788f39f697c7fff4bdc6b36345e7cebd9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B4 10356 bytes
font_02_sfnt_off0000de0d.bin
f092f659e9b278d60b7cd115f14e7dfe4bec22a547661f0465850e94311abb55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 16516 bytes

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