PDF malware analysis — malicious · 1bb45caf5cd06610

MALICIOUS

PDF

86.3 KB Created: 2021-06-25 23:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: fe301beb87f8e31bcacbea7c5960f293 SHA-1: 9863affef3fc92f752cac71414b894d179c8cd59 SHA-256: 1bb45caf5cd0661026dabf3c6519fcdba045afe61b86ef86b02c9c6bef37185a

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that likely lead to phishing pages or further malware downloads. The presence of multiple compromised CMS upload links and disposable hosting further supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9848

Heuristics 7

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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://lexen.ca/userfiles/files/5161313744.pdf In PDF document text
- https://accuratesearch.com/userfiles/file/kirerikebogig.pdfIn PDF document text
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cf444795b12---sulugejamusoxeforiged.pdfIn PDF document text
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/80583opq1bleoq544cshtan1m8/bomaxabavodemubasi.pdfIn PDF document text
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160822af92feee---36062671361.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/jovop6f1mudrjoqb74scrmscb4/3543154443.pdfIn PDF document text
- http://change4best.ru/upload/file/numaxeluzeveruri.pdfIn PDF document text
- https://abugfreemind.com/userfiles/file/89170909446.pdfIn PDF document text
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/201379986b47c54483f718bcdb4da038/72586415435.pdfIn PDF document text
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f507367f4---keruloxixawalepir.pdfIn PDF document text
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/3e308bfa353d0dfa4bc0166f0bfcaf0b/vunanumikaxom.pdfIn PDF document text
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608763c45427e---xoporafafeb.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/710dedf8aa1f74bc4997b69471319e7d/51684710575.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609851025985f---18021708164.pdfIn PDF document text
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/f3b0d7585736ab7c00bdeb2eccbed836/32024643905.pdfIn PDF document text
- http://isagenixmakessense.com/ckfinder/userfiles/files/dafuve.pdfIn PDF document text
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160b29bf1a41ae---ravixok.pdfIn PDF document text
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/0d124e72b0a229adea142bae89ca4184/8801353158.pdfIn PDF document text
- http://esejsc.com/upload/files/21526330036.pdfIn PDF document text
- http://shuswapladystriders.ca/userfiles/file/famafejukogimejum.pdfIn PDF document text
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/a4d38f70fc20126fd9f46fe91556b30c/molabomorizotoxedi.pdfIn PDF document text
- http://allmedicus.com/userfiles/file/61627117147.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883696ba31f---12951652935.pdfIn PDF document text
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5187503781---27893974249.pdfIn PDF document text
- https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1d1af24cdb---94881925342.pdfIn PDF document text
- http://sacoorhealth.pt/site/upload/file/pobakipefofifukitepob.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=config+ssh+http+injectorPDF 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_off0000eed9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEED9	17072 bytes
SHA-256: `13076aa81ee566c68560df8b379395a6e786f7129224a55d7e24648a42e52c2e`
`font_01_sfnt_off00011b76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B76	10712 bytes
SHA-256: `0218a1d493726c3217899fa9bc62fe93dafb7f4a08d3558aa9b9bfa56e76bb53`
`font_02_sfnt_off00013404.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13404	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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