PDF malware analysis — malicious · d2f067a51fc10a4d

MALICIOUS

PDF

83.1 KB Created: 2021-09-04 15:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 6aa1fa63e7fced02a55078481e379ad3 SHA-1: e58e87f3251083e1c682723f0552f56f0b5631a0 SHA-256: d2f067a51fc10a4d2bbe3d2fbe4e679c31d62b96bfd2b3ce0f5f6ad609de6436

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm directing users to multiple compromised websites, likely to host malicious files or phishing content. Heuristics indicate it's a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. The ML classifier also strongly flagged it as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9911

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://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1611f72f4d11e4---vugonetulunatodi.pdf In PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e6182d57fb3---funez.pdfIn PDF document text
- https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/49uqk8hfqpia61l2s7nbvcf5a3/dadigu.pdfIn PDF document text
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/wijuzokawos.pdfIn PDF document text
- http://ash-graphy.com/userfiles/file/79202055575.pdfIn PDF document text
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3c8f6378a---jatepu.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ba17299c0f0---suwokabevumuwuzebez.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/13060847658.pdfIn PDF document text
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160844e431314b---nidawiri.pdfIn PDF document text
- http://urbanconstructions.org/images/uploadedimages/file/63680514881.pdfIn PDF document text
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/55b8daeefac0cf0410bcee5219ace576/4985834663.pdfIn PDF document text
- https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/b4cf5ea16ee4b46f416a8b06e8d85aa5/dujadalatow.pdfIn PDF document text
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/c01cfcd4d321bc9859e62e6ea283dae5/gowafaloj.pdfIn PDF document text
- http://colegiosantarosa.com/uploads/imagem/file/litodikew.pdfIn PDF document text
- http://monktonlionsclubkidscamp.com/clients/9/99/99b8b5517e5fb663501b7ee5137ebf55/File/zosasoz.pdfIn PDF document text
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/9aictu4sdiqgbf2ocegq91v5e0/tozidexilakumifojuperesu.pdfIn PDF document text
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/a3838c61322355d0367f0546823b7517/jojuduwitumaloxut.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4bcdee484---ravuvemaditanimume.pdfIn PDF document text
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a57aef1b9b0---gazodifagovozinugowofusoz.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c34b41e78---pemanapipef.pdfIn PDF document text
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a60621a8322---86702224500.pdfIn PDF document text
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/ef5b5766078500e630cd95eeead3c5b4/33009692909.pdfIn PDF document text
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/c75574c47165a6b2dff7e8d97abbb63f/65686912227.pdfIn PDF document text
- http://nineslash.com/user_file/file/vozol.pdfIn PDF document text
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b269b78bfd7---nesoraku.pdfIn PDF document text
- http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909b70077e9---50960643662.pdfIn PDF document text
- http://kargo-box.com/uploads/files/48913135116.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=sitio+de+cuautla+pdfPDF 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_off0000db40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB40	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f352.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF352	20068 bytes
SHA-256: `b40d3762340d78f9d2ca070ff7d798c1852232acb309e7108a710e1c35ed67e1`
`font_02_sfnt_off000126c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126C9	10416 bytes
SHA-256: `1c4fca8d83ab1f8f870600f3f2ad64a17daf42a51083850ccbdd5dc90d4f484a`

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