PDF malware analysis — malicious · 29b13b1f7663ead4

MALICIOUS

PDF

68.5 KB Created: 2021-10-04 07:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: e227dd04ffc5d65e8999245d785b3cb3 SHA-1: 5f7a2b9666d78d7e511aa66663866cef447c248d SHA-256: 29b13b1f7663ead41043e0d6282fa3a653cef2d4cbe3e5a487b374939c2272a9

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm and a callback phishing lure, directing users to various domains. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest an attempt to exploit the user through deceptive content, likely leading to further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9956

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
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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://philabc.ru/uplcv?utm_term=the+escapists+2+multiplayer+escapes PDF link annotation
- https://paymentor.nl/uploads/file/lirijexejeme.pdfIn PDF document text
- http://parkingparts.com/Upfiles/file/devopas.pdfIn PDF document text
- http://teusz.pl/UserFiles/file/85472010246.pdfIn PDF document text
- https://phunhai.net/upload/files/12152050757.pdfIn PDF document text
- http://americasbestwingsbeltsville.com/uploads/files/17893248776.pdfIn PDF document text
- http://gpszone.hu/upload/userfiles/file/6389265529.pdfIn PDF document text
- https://aslimitada.com/userfiles/file/41051727874.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613172bb07152---13321213025.pdfIn PDF document text
- https://florissantdesign.nl/docs/Image/file/71572842183.pdfIn PDF document text
- http://toitureetfacade.fr/data/Files/gepetaba.pdfIn PDF document text
- http://systempro.kr/userData/board/file/feguxabolewudimalo.pdfIn PDF document text
- http://dolphinkorea.com/files/files/36773051520.pdfIn PDF document text
- http://ardennes.proximeo.com/ckfinder/userfiles/files/50413381964.pdfIn PDF document text
- http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/36175960203.pdfIn PDF document text
- http://gaudi.tw/upload/files/nakaguwijizivosazulos.pdfIn PDF document text
- http://tvsatkrosno.pl/userfiles/file/wokizepufudax.pdfIn PDF document text
- https://galaxy-training.com/userfiles/file/vunijalusukotulin.pdfIn PDF document text
- https://lochoanggia.com/upload/files/lonivomogop.pdfIn PDF document text
- http://muzeumostrowiec.pl/obrazy/file/januvoje.pdfIn PDF document text
- http://tuclubcr.com/campannas/file/doworul.pdfIn PDF document text
- https://0286869143.com/editor_images/files/82825467750.pdfIn PDF document text
- http://unibox.lv/files/text/70153764856.pdfIn PDF document text
- https://winpoasia.com/ckfinder/userfiles/files/risoxag.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_off0000ad24.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAD24	10712 bytes
SHA-256: `794dc5d3b4eaef972c4b84453dc0f86ddbf0b28752595945ef66d023fde65741`
`font_01_sfnt_off0000c5d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5D4	15096 bytes
SHA-256: `2f0dca9aa712029efd41566513338874c94062912ed8baff54a0d5818e7923c3`
`font_02_sfnt_off0000ec2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC2B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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