PDF malware analysis — malicious · 9562dc75bddf05df

MALICIOUS

PDF

84.1 KB Created: 2021-09-08 01:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 31c42c21ddefd9340dfb18481a88a479 SHA-1: 1961a0d1a34ba78006b89ef4ecbe6a032b06a3ca SHA-256: 9562dc75bddf05df273d4f9e93d70930e75e96a8be5cae89304ba5df4fd886b6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links, many pointing to compromised websites or disposable domains, suggesting a link farm used for phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

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://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/83311641023.pdf In PDF document text
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/3709d577009598434ef848a980195c6d/634707399.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/040730412141.pdfIn PDF document text
- http://peneleos.pl/userfiles/file/55446207073.pdfIn PDF document text
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/11b5048f7d95b977e594403d91245fd0/79811776688.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5e02a47a17---lokim.pdfIn PDF document text
- https://selispin.com/calisma2/files/uploads/18645181603.pdfIn PDF document text
- https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/16086a5d46514c---labukuzas.pdfIn PDF document text
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e02886e653---98722392950.pdfIn PDF document text
- https://nepalaviationmuseum.com/userfiles/files/sukuvorotarukik.pdfIn PDF document text
- http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160945f40f176d---83519920924.pdfIn PDF document text
- http://majorpropertygroup.com/userfiles/files/sasudipinokopurutexisa.pdfIn PDF document text
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/9bc6810798678b63191ef5ade98449c1/52760519532.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a94f0c2dc9d---45890919327.pdfIn PDF document text
- http://alpanelektrik.com/depo/sayfaresim/file/98835972466.pdfIn PDF document text
- https://vietrocknet.org/app/webroot/img/files/79118087171.pdfIn PDF document text
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b162f1db92a---xajopena.pdfIn PDF document text
- http://clinicaveterinariagoitese.it/userfiles/files/lilovewonutopixamudiwuvud.pdfIn PDF document text
- https://chp-travel.ir/data/file/zatijafojufajasujira.pdfIn PDF document text
- https://suthuytinh.com/app/webroot/uploads/files/37914735635.pdfIn PDF document text
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717e118e1ee---71965732766.pdfIn PDF document text
- http://apothepharma.com/upload/files/10723294421.pdfIn PDF document text
- https://myphi.biz/nbloom/fckuploads/file/32846597835.pdfIn PDF document text
- https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c819a536de---kagesaxuxarovo.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/gaxogotodalekujofoxulideg.pdfIn PDF document text
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607669be8d757---kozamosoru.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=press+conference+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_off0000e34e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE34E	10216 bytes
SHA-256: `0cde92c3736b8a797c9d663a58b3b4678f9deda7a201eb021622ac2cdd1c1256`
`font_01_sfnt_off0000fa58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA58	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001126a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1126A	18288 bytes
SHA-256: `35250f3359199e9713feaa103d8fd4da10d57f94fd30dad7577150d99a05ea78`

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