PDF malware analysis — malicious · cbbc201d3f208dd4

MALICIOUS

PDF

84.1 KB Created: 2021-09-11 09:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22

MD5: 0b492acfd2072204ea3609ddd93f7b3a SHA-1: 7de48ee8745b9ec4d5bee8ce0473797048340806 SHA-256: cbbc201d3f208dd4870bdcc97b67a0dabcb9c2c457cfa5aa1771d2cc8764fcf7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that form a link farm, with many pointing to compromised CMS uploads or disposable hosting. The document's structure and the presence of these links suggest an intent to redirect users to malicious sites, likely for phishing or to download further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://infrive.ru/uplcv?utm_term=stick+hero+fight+download PDF link annotation
- http://stressmanagement-karriere.de/userfiles/file/60535191859.pdfIn PDF document text
- http://quiltingacademy.net/fckeditor/userfiles/file/lonamopulesa.pdfIn PDF document text
- https://peoplehelppeople.net/uploads/File/88522800875.pdfIn PDF document text
- https://copacndg.com/images/uploads/files/mepurefijigudejik.pdfIn PDF document text
- https://zaragozadenoche.es/upload/files/79325098250.pdfIn PDF document text
- https://tpijobportal.com/ckeditor/ckfinder/userfiles/files/36113911065.pdfIn PDF document text
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/cdaa08723d4d520e7582aebb67deda3a/92906428666.pdfIn PDF document text
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/be9b9dcaf42025754572c099b49f98d2/23673232962.pdfIn PDF document text
- http://poddertradingandindustries.com/userfiles/file/51785969408.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/3b451f66d2983ac52f4e562e2107676c/sutorigetezunebosexaxok.pdfIn PDF document text
- http://quangcongluc.com/upload/files/rufugotulukifubojedemuzu.pdfIn PDF document text
- http://www.biosafety.biz/ckfinder/userfiles/files/tiladusavejazura.pdfIn PDF document text
- http://icsbc.ru/fuploader/file/xatedemivupoxitoviwetob.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/vju19e48v1s8r1rbt1ueg98n7g/dekod.pdfIn PDF document text
- http://runbo.net/upfiles/files/16310334657210.pdfIn PDF document text
- http://lonniestireandauto.com/nbloom/fckuploads/file/57537592244.pdfIn PDF document text
- https://tekartltd.com/upload/files/12870904893.pdfIn PDF document text
- https://pasarangroup1.com/contents/files/53033084660.pdfIn PDF document text
- http://mcserpenti.com/userfiles/file/40210452517.pdfIn PDF document text
- https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/7577923495.pdfIn PDF document text
- https://marcvandewiele.com/userfiles/file/47818507259.pdfIn PDF document text
- http://lucchetta.net/userfiles/files/70696521825.pdfIn PDF document text
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133408d2a1b2---3596312548.pdfIn PDF document text
- http://nilesk.com/userfiles/file/20344122803.pdfIn PDF document text
- 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_off0000db22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB22	10840 bytes
SHA-256: `a0bf50166c03ee45ca9bfece96515744d7db54d0ce873ecbecbe01eaf90f5808`
`font_01_sfnt_off0000f3fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3FE	20804 bytes
SHA-256: `0bc937949132cf55ece0d733c4cebdb3ce3d36807b7ef98c963c72947272bed3`
`font_02_sfnt_off00012abd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12ABD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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