Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8046da8bd8b184b…

MALICIOUS

PDF

84.5 KB Created: 2021-06-27 01:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f65511f788728fcbd16771aa6f294c33 SHA-1: 52b6bc6f411d7a7f02b6d823985744260c58342e SHA-256: e8046da8bd8b184bc4d309a66d956ca3e8654888cf73200d326b664e7b506d96
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicative of a link farm designed to distribute malicious content or phish users. ClamAV detection and ML classification strongly suggest malicious intent, likely related to phishing or malware delivery via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://new-baby.me/userfiles/file/molinezetuzezixebesozok.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c10a2b5ba9f---vinataduvemidimakofogupa.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d61ca9e3f23---31315965268.pdf
    • http://aitrans.org/UploadFile/file/F1202106070525224949.pdf
    • https://annjulieskarpmo.com/userfiles/file/gimiv.pdf
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/93db666c0d35649482e7cc2d2460c68b/baguwi.pdf
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ad4edf1dd---pusupinu.pdf
    • http://ailizia.com/userfiles/21740011862.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/20606aea7910e124c21f3f5c449c3dc6/pakupobizanapaxevu.pdf
    • http://vorne-sitzen.eu/pcms/content/file/gararixaga.pdf
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/c645e2ba0d2e292593b6ea69ba3318ff/37089291163.pdf
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/hh03m3q5tjjtcqcc8cgacko3g1/10557802438.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b390824ceb---sivewazukadojaxe.pdf
    • http://loveperfectionschool.com/upload/file/ruruterofo.pdf
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/28342bc2ce39b2e511989309f2ff397c/25050530945.pdf
    • https://alamansyria.com/userfiles/file/97995931413.pdf
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/009a3660484f7d5a3cf2dec5e44aebff/lotopudugegerabe.pdf
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e145b27524---fixumepotibado.pdf
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/4cfbea61c3f6b069a4c52a3e1621a8a5/kapibivuvudofidij.pdf
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7218b96d---19854707723.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/154368a9f187aa88d79d81962da1f7c6/6878131971.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/f82f755296e989939cbb8ac79d29c4d1/62462886693.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c6358528c---gibipefu.pdf
    • http://clinicaveterinariabilancino.it/userfiles/files/zurasikifaduzoje.pdf
    • https://tramtron.vn/uploads/files/files/gotirolowoxebu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=virtual+cardiology+lab+answers
    • 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_off0000e36d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE36D 16792 bytes
font_01_sfnt_off0000fb7f.bin
0276b3932aec725387c87c14ae4613a7672f5ed48cd554cb032b5b0202018e70
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7F 17836 bytes
font_02_sfnt_off000129d0.bin
524bd4ea7e150f15166d9aaab691af202dd2c456424c78b0573ad225476973de
pdf-font-stream PDF embedded font (sfnt) at offset 0x129D0 10952 bytes