PDF malware analysis — malicious · 2a8f1631a8118a7d

MALICIOUS

PDF

75.0 KB Created: 2021-09-03 01:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: be51eb43a252a4df84568d610f67e87a SHA-1: 2b30c88493f009e86286a4f70b722a1f0a9e5aa6 SHA-256: 2a8f1631a8118a7d0c1fa9dd5333a8a70e405da803dcf9e439191e6f7db78fac

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution scheme. The embedded content, though obfuscated, likely serves to redirect users to these malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9907

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://chcial.ru/uplcv?utm_term=historia+universal+de+la+infamia+pdf PDF link annotation
- https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca0275a782---tigepiximigijakolexovogaz.pdfIn PDF document text
- https://coastalstudio.com/images/main/file/87695950749.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff8e396a7f---81600209961.pdfIn PDF document text
- http://kppzp.pl/userfiles/file/kulezevatajadilonudesolo.pdfIn PDF document text
- http://seyrimerdin.com/userfiles/file/23303791667.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/8f15fe6b5fa46bcc773fc696ce6c7d2c/6087631248.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/161269e98cb081---sezoze.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607315058f5ea---muvowomanunowaxevavoxa.pdfIn PDF document text
- http://chanakol.com/ckfinder/userfiles/files/39150632457.pdfIn PDF document text
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/s928vj807u5npqkc306p1grdu2/jipitenujix.pdfIn PDF document text
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ncmi4g7104b9hckj7vo8nr7i00/43951348930.pdfIn PDF document text
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/1ee2e25847325a09c78e6225698b2b47/98492478958.pdfIn PDF document text
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/lt5opjjlfhb8vdfvig05idudr9/padesasorinal.pdfIn PDF document text
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/6af0becc5f17493487f1cfc60d50ca24/10921155475.pdfIn PDF document text
- https://congnghethucpham24h.com/upload/files/kirojofe.pdfIn PDF document text
- https://allmassage.net/upload/file/20210521131354.pdfIn PDF document text
- http://ng-sons.com/userfiles/file/kerazedemimajomo.pdfIn PDF document text
- http://t-p-fortune.com/userfiles/file/ziwewafutudiwikekorid.pdfIn PDF document text
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b63320f035e---rojubugut.pdfIn PDF document text
- http://anhuizhkj.com/upload_fck/file/2021-5-12/20210512054614579442.pdfIn PDF document text
- http://perchegouet.com/ckfinder/userfiles/files/33121640880.pdfIn PDF document text
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa2abb660b---defoguxojejifunexidanabex.pdfIn PDF document text
- https://khambenhxahoi115.com/images/files/mudawaburilowafivase.pdfIn PDF document text
- http://otoozevran.com/resimler/files/ratakobisiwabanonenenej.pdfIn PDF document text
- http://maxkbm.com/clients/2/28/28fcaa936e2ecbeb6c9a97ea0f1ab253/File/47450869230.pdfIn PDF document text
- https://oceanflowerhotel.com/uploads/image/files/43106551147.pdfIn PDF document text
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/df75988d79367ba3f744815e1d3badc8/ranubi.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7708d4c714---24915013376.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c040.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC040	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000d857.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD857	10816 bytes
SHA-256: `ab68e78d6bb78cf7b86980f69f7bbe821ffa1fd4b2f22fed6125ef6e403975ea`
`font_02_sfnt_off0000f13e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF13E	17704 bytes
SHA-256: `0e61dfcbd6890a1d7fd9adcf5352f7e9f520d226653d4e61286b59035042589d`

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