Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d3e89f4bc34c00…

MALICIOUS

PDF

83.5 KB Created: 2021-07-23 16:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d05a232a0ac8994323df5ddd39cb212f SHA-1: 49a56c2d0f327f14c65855bf800f695f5ace7c8c SHA-256: 00d3e89f4bc34c0045c3f2878d37796730446726386a928f1ff2992792208456
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites and disposable domains, suggesting a link farm or phishing lure. The presence of these links aligns with the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/q21d8grl558rgarlrddud00iko/wuxuxuritotolixiv.pdf
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/bf9d327ceeaec221f3067972a703a9b8/5718200920.pdf
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/6390cb2b88453f26e644db6dec2e7e9b/68605749949.pdf
    • http://aliglobshop.com/userfiles/file/76113077411.pdf
    • http://qunjl.com/userfiles/files/65869510051.pdf
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076dc9c8170d---59953316222.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/d9e5a0ef985dd37c7183d75a136d59f2/wekase.pdf
    • https://x-software.cz/data/file/27975289083.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160787996cc004---13950638323.pdf
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cc440d5a396---nupapibadavasujo.pdf
    • https://caribemed.com/userfiles/file/sizevi.pdf
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084630f6d224---jekijoxumelal.pdf
    • https://cornwallstaffagency.com/userfiles/file/43563444862.pdf
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/e3a493a170c5d17d206ee5ef338b71ee/juvaxigekixilaxusovidate.pdf
    • http://fotografoenricogiampieri.it/userfiles/files/28156239573.pdf
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb788882064---5889560383.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b6e0d65b1---8885601275.pdf
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896fb5e39a3---mikipuzarefup.pdf
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f19ea40cf0---67275723224.pdf
    • https://cvsc.co/userfiles/file/devutixaberikonaz.pdf
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/6f1b921fd1aeb03adbf1707fc48e753f/1374772716.pdf
    • http://strandedtattoo.net/file/mikaxulogajefekoleweti.pdf
    • http://manavpublicschool.org/manav/userfiles/file/52385133842.pdf
    • https://shop-ecobati.com/medias/upload/files/mazuxasizuxamatufavu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=dr+jagannath+dixit+diet+plan+pdf+in+marathi
    • 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_off0000e2e5.bin
df515142857062efa13246b8bd20dfa79987e86053489c7c6f46c01a51ed5980
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E5 10892 bytes
font_01_sfnt_off0000fb9c.bin
0ae8f36be0484ff1b3466bee8b13d91c118a35bc8f179cf5d6decca0da480c05
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9C 16916 bytes
font_02_sfnt_off00012766.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12766 16792 bytes