PDF malware analysis — malicious · 4dc0f6c929648461

MALICIOUS

PDF

88.2 KB Created: 2021-07-16 02:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: ea975cb7c51f587666d85ffa28577d88 SHA-1: 5f1476addd292f20bb7a2a17fea5c762c49f3ce6 SHA-256: 4dc0f6c929648461ea20131cdf01e482b9c95b4b56bb3291824db837491242c6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload directories and other disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the link farm indicate an attempt to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/d12e61b4e6763969c63893a56b9ceba0/pekilefefaboxezobak.pdf In PDF document text
- https://nnkcreations.com/userfiles/file/32048124628.pdfIn PDF document text
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/a2050c8e8bbd72bbff45d8d93b10f01f/pelusitenigeb.pdfIn PDF document text
- http://xn--80aamdqpfpr.xn--p1ai/upload_picture/lanomopinilugevu.pdfIn PDF document text
- https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/fb43bf9b7c9c7886651bd0653a6753ea/jomewibujikotadasunufek.pdfIn PDF document text
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/efed9024f075fe4507fe1b2fd58595ca/34451283169.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a72173951a4---dewabetegotirubazuwabir.pdfIn PDF document text
- https://petek.biz/resimler/files/junulakosugikuxozasib.pdfIn PDF document text
- http://biolabsrl.org/userfiles/files/26411371494.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/e226b7be39e8f99fcbe32e31da9e84e6/95530248526.pdfIn PDF document text
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a23d539a066---jivipu.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/9e589095f84cf6dbe655efa95cc56c0a/rigelitipugelarekapa.pdfIn PDF document text
- http://dgjinhak.kr/DATA/upload/files/202105270216323511.pdfIn PDF document text
- http://xycrusher.com/d/files/vizewozaxokovezuwenipe.pdfIn PDF document text
- http://ahxxzx.com/userfiles/202105/file/dalarofatawetarera.pdfIn PDF document text
- https://studiovizia.com/webroot/img/content/files/1671624277.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16095a715d47ee---96968071780.pdfIn PDF document text
- https://mrdak.cc/uploadfile/files/69726756235.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c4dc997e7a2---1653500482.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079adec7515b---25275804869.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16082df2097dfb---vujimutojesakulagi.pdfIn PDF document text
- http://jfk1969nola.com/clients/873000/File/39259664071.pdfIn PDF document text
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db3d7a0576---28292539094.pdfIn PDF document text
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/44284984487fea5f37c417e8c14e614b/zasapijupipupasotov.pdfIn PDF document text
- https://mo-space.space/web/img/podborky/files/60800221121.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=cinnamon+rolls+and+apple+pie+fillingPDF link annotation
- 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_off0000f225.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF225	18512 bytes
SHA-256: `8da1ea9043d2850f2253000e7a025be93ca111bddede1987ab9d890d7aca199d`
`font_01_sfnt_off0001229b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1229B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013ab2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13AB2	10776 bytes
SHA-256: `9f1f0dd7416906d2ba0c572e362e40ac5fbcb714593fafa0f31b6075275d0de8`

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