PDF malware analysis — malicious · 3738065a22554a67

MALICIOUS

PDF

78.4 KB Created: 2021-09-05 05:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 4be76df9a9faee9850569fe3b0ba96b9 SHA-1: 6c8398a20d1ca312e8dbef4dfc82403e0986d642 SHA-256: 3738065a22554a67d9dba07b33df6e1e6aefc404a6d1e692318f7662300be935

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics strongly suggest an attempt to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9938

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://travelinnsuites.com/nbloom/fckuploads/file/73935832957.pdf In PDF document text
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131580d2aa0e---87151806398.pdfIn PDF document text
- https://ccaquebec.com/userupload/files/8466093072.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad5de19e83---wilisedebozawoxedimemi.pdfIn PDF document text
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/xivedumaselagozasija.pdfIn PDF document text
- https://bhavanarayanaswamy.org/userfiles/file/vugepaza.pdfIn PDF document text
- https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/82769438845.pdfIn PDF document text
- https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/3ef28872e19f30109e38282d7478e90e/vesoki.pdfIn PDF document text
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/9b7af0a78f15b7ad573d1ebbd2697979/52509454531.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/86cead51fee5438e49637726712b4b0f/walukegenogusakal.pdfIn PDF document text
- https://ka-base.no/images_content/file/beruzivilesuxuxaxepide.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d4c4b8c18c5---22940185011.pdfIn PDF document text
- https://rh-h1tapi-turbo.com/contents//files/zuwuvi.pdfIn PDF document text
- http://fluellentrees.com/clients/58222/File/29813439129.pdfIn PDF document text
- http://cmtsport.com/pliki/ganet.pdfIn PDF document text
- http://nwatchonline.org/userfiles/file/57155435209.pdfIn PDF document text
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160e82af62855d---sazikoziziwumubodejejojuw.pdfIn PDF document text
- http://kantoromega.pl/userfiles/file/61792000742.pdfIn PDF document text
- http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a70a12d745---vijikisaloji.pdfIn PDF document text
- https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/eb9c64a132ca40d563a7a663e71224c5/kikedopebigifujalul.pdfIn PDF document text
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085ba6766f81---fujubuxenunod.pdfIn PDF document text
- http://xn--2vxr09c6mc.tw/CKEdit/upload/files/2500975527.pdfIn PDF document text
- https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/b230a15b3d842d18b072cfe8b1e51b3c/5403264268.pdfIn PDF document text
- http://alexhofford.com/temp/files/file/40987929490.pdfIn PDF document text
- http://allycatering.com/userfiles/64162652003.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=wilbur+schramm+model+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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bd51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBD51	1936 bytes
SHA-256: `9aeb06937c81a5c56cf99af8deab830259c8e7bb488e779e8e638c33337cf583`
`font_01_sfnt_off0000c647.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC647	20568 bytes
SHA-256: `11755e870c49db1e72368a8c1a8b8132687fa13106d366dfd3a50ad45376fbda`
`font_02_sfnt_off0000fa34.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA34	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off0001124b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1124B	10916 bytes
SHA-256: `e94d926905b8d77b153af3937d8e1a5367aabbbbc4943e33b4b7fc7ab366290b`

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