PDF malware analysis — malicious · ad3a779b56576c9f

MALICIOUS

PDF

89.9 KB Created: 2021-07-14 03:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: 25fffa23001cfdcbcd1f34b9e91d6d10 SHA-1: cac12ba2e38bce491ab200226acfaa4e06a36124 SHA-256: ad3a779b56576c9f82efcd3bd86d4bbd52b9eaa2450ba259a95069064f2698f1

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to various websites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme, likely initiated via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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 http://bestbuyfromindia.com/userfiles/file/memejugom.pdf In PDF document text
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a64c2a30cd6---44495069162.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/kv9pqc1pdon9nc67594ndqsso4/83901614258.pdfIn PDF document text
- http://fipjp.com/userfiles/file/pibibiroroliratap.pdfIn PDF document text
- http://stellarvvv.ru/ckfinder/userfiles/files/zidedujofesosewepevazez.pdfIn PDF document text
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/25o3jsfo4b81g7cf5pljujg0s3/48553341552.pdfIn PDF document text
- http://eaas-journal.org/survey/userfiles/files/pafedofazativanuvagovuzal.pdfIn PDF document text
- http://keletunderground.hu/images/uploaded_pics/file/dojukubosetawigaxeroxabed.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/7f40a000c16afbd714c2e2b76b3adee7/puribosazet.pdfIn PDF document text
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607105a33fbb8---pefavodetatuxajop.pdfIn PDF document text
- http://circuitoinsulargc.com/documentos/file/31762585629.pdfIn PDF document text
- http://world-green-hope.com/uploads/files/33915963922.pdfIn PDF document text
- http://maskaevlawyer.ru/userfiles/file/tofaf.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a751304226d---88534902311.pdfIn PDF document text
- http://domusanna.it/userfiles/files/89651689263.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/ebcce6aba389c97547d19859700cf7c0/63266759119.pdfIn PDF document text
- https://argentinaproduct.com/ckfinder/userfiles/files/16169265309.pdfIn PDF document text
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f98bd2a18f---jopisabanewera.pdfIn PDF document text
- http://zpb-maciejewski.pl/upload/fck/file/gegozojepaniwekidoxefa.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ec1608d2d---texudo.pdfIn PDF document text
- https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/d0cc71983b67d588975e1362aa5769e3/33565542204.pdfIn PDF document text
- http://iccj.jp/images/uploads/fckeditor/file/baviwubobefif.pdfIn PDF document text
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a1684b6c310---4950450371.pdfIn PDF document text
- https://foundryindia.org/userfiles/file/xabegukesaforosakap.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=get+my+car+titlePDF 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_off0000fce6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCE6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000114fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114FD	10152 bytes
SHA-256: `ba0f93e2ab97f4c6e54fd13b0dc0d7c53d72f273f6aa29bc1571cf0422da4ee6`
`font_02_sfnt_off00012bb8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12BB8	17584 bytes
SHA-256: `7f44a379a8952bf4a9159e68b194d2f28e210d3cb34dc7c6355b5703f6e47d8b`

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