PDF malware analysis — malicious · 47a301bee9c9e439

MALICIOUS

PDF

69.3 KB Created: 2021-09-01 19:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 93a7058847d5d5cdee5f8783ba59a176 SHA-1: 635eeead14221589cf47b05b29b49412a93db618 SHA-256: 47a301bee9c9e439af7582dac79c9fbcd1d992003c3eb8990142ae21e5c59d50

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple compromised WordPress upload storage locations and disposable hosting sites. The embedded URLs suggest an attempt to redirect users to malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.5557

Heuristics 5

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
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://drivescuolaguida.it/userfiles/files/51910003510.pdf In PDF document text
- https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/9b43b8d1db7175f82ec2a6b03d599837/gutodelowatewadewazugako.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e89a3c990c1---56971113777.pdfIn PDF document text
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160777b71e6159---kivolapiraju.pdfIn PDF document text
- http://sl-light.ru/design/img/upload/file/86857006445.pdfIn PDF document text
- http://3colorjazz.com/fckeditor/userfiles/image/watuvix.pdfIn PDF document text
- http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d94609be16---65836113198.pdfIn PDF document text
- http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0772d026a---60970015792.pdfIn PDF document text
- http://jainfarms.com/uploads/sowutiduxibidefijarama.pdfIn PDF document text
- http://edu-soft.ru/site/htmlimages/file/49438966102.pdfIn PDF document text
- https://livermore.com/wysiwygfiles/file/gezujuwi.pdfIn PDF document text
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16123bce8aaca7---67646759334.pdfIn PDF document text
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/875b3a2244c6776e0d9af29e3f34989e/66156708276.pdfIn PDF document text
- http://tarnava.eu/user_images/file/90193227029.pdfIn PDF document text
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/vkgb49plmu6e973elpkgu9bq69/13104220862.pdfIn PDF document text
- https://stpatswatertown.org/ckfinder/userfiles/files/nojogupenizezobaxu.pdfIn PDF document text
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb1f93d3ae---63448468482.pdfIn PDF document text
- http://sujitonweb.com/userfiles/files/80285246507.pdfIn PDF document text
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ee0c4ac79c9---jotamarajawikum.pdfIn PDF document text
- http://novichiha.ru/pic/file/nojudaruvava.pdfIn PDF document text
- http://marketingnews.fr/images/file/5950671182.pdfIn PDF document text
- http://zonwering-belgie.com/ckfinder/userfiles/files/sotugibixenimojavomig.pdfIn PDF document text
- http://urbanconstructions.org/images/uploadedimages/file/lixokapudugi.pdfIn PDF document text
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d451323b13---96122710084.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=cap+rate+and+riskPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000de7a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE7A	10340 bytes
SHA-256: `80890a34ff7bb33d6f991b14f66d75feef6ceac9a67ccd6831c04c95604e5490`
`font_01_sfnt_off0000f5fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5FA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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