PDF malware analysis — malicious · 9b699a09f3d93444

MALICIOUS

PDF

76.2 KB Created: 2021-09-22 18:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: f475447f5de52bd8c1df875560c202a0 SHA-1: 733be417455d7cf98a6ccbcc72015827d9e5fd31 SHA-256: 9b699a09f3d93444219deb2d74a979e312618c068977bbb727a81fcc81bb8d46

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The presence of numerous external URIs, many pointing to disposable hosting and employing UTM parameters, strongly suggests a phishing or malware distribution campaign. ClamAV detection and ML classification further confirm its malicious nature, likely serving as a lure to download further payloads or redirect to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

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
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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=new+king+james+version+apk PDF link annotation
- http://rheinmotel.com/userfiles/file/pibimiva.pdfIn PDF document text
- http://stmarysharipad.com/userfiles/file/ninifudasupodipale.pdfIn PDF document text
- https://www.habitat-morvan.fr/ckfinder/userfiles/files/40529407965.pdfIn PDF document text
- http://hatowo.com/app/webroot/uploads/files/55643226193.pdfIn PDF document text
- http://nktrading.qa/file/files/sopugimikufikis.pdfIn PDF document text
- https://gangwontaxi.com/FileData/ckfinder/files/20210911_ED7CD114E32D248A.pdfIn PDF document text
- http://opt-russtd.ru/data_center/upload_pictures/file/17762586096.pdfIn PDF document text
- http://travelspace.pl/userfiles/file/vujagotiximujenavodu.pdfIn PDF document text
- https://happycondo.leaddeehub.com/userfiles/files/kekidirivowunililozarixov.pdfIn PDF document text
- http://bc-arman.kz/ckfinder/userfiles/files/sigalixivemof.pdfIn PDF document text
- http://www.hebrewforreadingcomprehension.com/content/82590106884.pdfIn PDF document text
- http://utcsp.rustyramone.com/uploads/files/37435061884.pdfIn PDF document text
- http://pune-india.info/userfiles/file/joniripomisasizupobopeso.pdfIn PDF document text
- http://cathyourhair.nl/js/ckfinder/userfiles/files/pogaxizufikukibob.pdfIn PDF document text
- http://trieuduong.com/images/Download/23905352002.pdfIn PDF document text
- http://wpchkg.com/upload/image/file/vumavanumuxarajozimav.pdfIn PDF document text
- http://fslawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xakodij.pdfIn PDF document text
- http://dautuck.com/uploads/userfiles/file/28901144370.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/5k878hmueud69oel3krlipndoa/powelol.pdfIn PDF document text
- http://celcg.pl/uploaded/file/kilexowimilog.pdfIn PDF document text
- https://facades-et-traditions.com/actualites/file/91598495488.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/5b692c9911bdcbb9dd66537498574e7a/rirewumulidirewekesi.pdfIn PDF document text
- http://poongdung.com/FileData/ckfinder/files/20210916_A0BE1EC4D2025BB8.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_off0000c65e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC65E	16820 bytes
SHA-256: `00a1d9696635a1e8798171986306d67d252eabfe91f16d743bea5c24bdd4b8cd`
`font_01_sfnt_off0000f1d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1D0	10800 bytes
SHA-256: `a93f189639d475cfe0925b5c27c03d588bdcd3ac2dbfe9c8fff37f54435e6971`
`font_02_sfnt_off00010abd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10ABD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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