PDF malware analysis — malicious · 1d6ada4d360a165a

MALICIOUS

PDF

80.1 KB Created: 2021-08-19 20:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: 7c0f6ba3650ea111f4437063f3a96f9a SHA-1: b5ddc58fe6c3c9be98ce97dc9c653bdd44bd404a SHA-256: 1d6ada4d360a165a9db13fc9892c34e27199c359f9f154e85a5ab67807f46583

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains numerous external links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9949

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://drafthe.ru/uplcv?utm_term=annabel+lee+annotated+pdf PDF link annotation
- https://locktactyuma.com/ckfinder/userfiles/files/72508726566.pdfIn PDF document text
- https://on-call-anatomist.org/ckfinder/userfiles/files/86479510286.pdfIn PDF document text
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6c5b34cd9---guxesuga.pdfIn PDF document text
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a15e95ea7---27153909125.pdfIn PDF document text
- http://santabruna.cl/upload/file/55390119514.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/el4ch8pk7iqv4umka48q4lh8f1/70179255217.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b06c815e57---65673210696.pdfIn PDF document text
- http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092656b09589---34558690340.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b562b13a085---fawove.pdfIn PDF document text
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160853c62ebd63---89865019455.pdfIn PDF document text
- https://by-express.com/upfiles/editor/files/72178833888.pdfIn PDF document text
- https://mamotato.ro/userfiles/file/77956856439.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e6be8bd9c---tufoditos.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ecc73a880a---40303080164.pdfIn PDF document text
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/7a6857b1216ffbdbcd13001d9de66185/guvajepimanebo.pdfIn PDF document text
- https://bnovum.hu/downloads/15801153978.pdfIn PDF document text
- https://poojaindiangrill.com/nbloom/fckuploads/file/woxexezotorezuzomare.pdfIn PDF document text
- http://riverside-plaza.com/upload/userfile/files/57483880898.pdfIn PDF document text
- http://pusancard.com/userData/board/file/wigow.pdfIn PDF document text
- https://www.retake.dk/ckfinder/userfiles/files/zetig.pdfIn PDF document text
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/f65962020a2b418d8c0ddd6945b9d5d1/49689517465.pdfIn PDF document text
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/36a1f0c6d1e532becaeec516981c09e1/55088225801.pdfIn PDF document text
- https://solidpractise.com/files/userfiles/file/kawixalubibevik.pdfIn PDF document text
- http://bavlas.lt/ckfinder/userfiles/files/12680990306.pdfIn PDF document text
- https://implant-drill.com/userfiles/file/59348197859.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_off0000dac1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAC1	10252 bytes
SHA-256: `613b1846f44b277dc9be776fad3b3dfa3c42ea930cb91f5203de5a3d5016a0b2`
`font_01_sfnt_off0000f1bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1BC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000109ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109CE	16144 bytes
SHA-256: `2136d5425fe00c4a67762c45fc50e4f4d6a20515e1aad794bed3f37ea01d50a7`

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