PDF malware analysis — malicious · 64500ced51787ac7

MALICIOUS

PDF

89.5 KB Created: 2021-09-08 22:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: b7bbeb59a9b4a7340bf3201840855ebb SHA-1: ab0e0c6c2639b01859640d13ed769c6a3ac2e208 SHA-256: 64500ced51787ac7fc1ec96e60a2f2aec7e0e7b17909c676d37be8128fc08fbb

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, and the document body was unreadable, so the rationale is based on the URL structure and heuristic findings.

Machine Learning

Nyx PDF Classifier malicious score 0.9761

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 http://exms.fr/sites/default/files/file/69554467069.pdf In PDF document text
- http://locthanhroyal.com/upload/files/feposexilewini.pdfIn PDF document text
- http://kssi.ir/public/userfiles/file/42113882952.pdfIn PDF document text
- http://debrecen.varosom.hu/userfiles/files/bisosujixogomom.pdfIn PDF document text
- http://dietetyka-24.pl/images/files/72270164699.pdfIn PDF document text
- http://tdbm.vn/upload/files/67243805007.pdfIn PDF document text
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161321c707e4d3---85275312503.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134df2d07329---42378083845.pdfIn PDF document text
- http://lagrupacio.cat/file/puxadovetogodarod.pdfIn PDF document text
- http://remproekt-m.ru/admin/ckfinder/userfiles/files/kepazatet.pdfIn PDF document text
- https://toscanafantastica.com/userfiles/file/53928265293.pdfIn PDF document text
- https://laser123.com/geektic/files/xusirafokapolofata.pdfIn PDF document text
- https://bnbcostaverde.it/userfiles/file/gawobixap.pdfIn PDF document text
- http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/34642655605.pdfIn PDF document text
- https://ph2020.org/FCKeditor/file/wijepekixanuvatejopadonuv.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134ee12512bf---68591408671.pdfIn PDF document text
- http://embeddedhr.com/ckfinder/userfiles/files/jataj.pdfIn PDF document text
- https://afra24.com/basefile/afra24/files/buwepinufazigazofimi.pdfIn PDF document text
- http://dobre-jaja.com/Upload/file/53355341100.pdfIn PDF document text
- http://nfrostov.ru/upload/files/ritekezazofutepumifanozi.pdfIn PDF document text
- http://flairpens.ru/uploads/files/58320403787.pdfIn PDF document text
- http://modamoda.nl/uploads/pic_lib/file/75171963282.pdfIn PDF document text
- http://huh.hu/UserFiles/File/46146804128.pdfIn PDF document text
- https://labelmarket.pl/data/file/87987185495.pdfIn PDF document text
- http://theponghop.com/upload/files/29733728020.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/78629960632.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=three+letter+words+starting+with+rPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00010c43.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x10C43	10576 bytes
SHA-256: `d7182f0ec01139a5d0deaf493b7bc43fe0102c8e5e91a547990df4b2f90103fa`
`stream_005_off00012431.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x12431	17680 bytes
SHA-256: `01e2f03f6dbb5ad59fdfd814da90f9db04ed97955e611d88bd50f3a28fb7f469`
`font_00_sfnt_off0000da6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA6A	19516 bytes
SHA-256: `5a1867c4e02401d148a17fff27a48fc59b09bda22ee03bc14e6fd8c4b1b67ab8`
`font_03_sfnt_off00013f36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F36	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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