PDF malware analysis — malicious · 7e9911b488f35da1

MALICIOUS

PDF

69.2 KB Created: 2021-10-01 09:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 01c18cfd85d929762d3a74358d68275d SHA-1: 9f408e9e0706559bde223744ee79bd06b7bf4683 SHA-256: 7e9911b488f35da1b82a5ce416f7484e55a8a5c9fbd8a6368bcc39a892f33f94

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of external links pointing to potentially disposable domains, further supporting a phishing or malicious redirection scheme.

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
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://nomylo.ru/uplcv?utm_term=sukhmani+sahib+path+read+online PDF link annotation
- http://hanarotalk.com/userfiles/file///fukaraxulowamoz.pdfIn PDF document text
- http://dxline.eu/userfiles/file/zexuxa.pdfIn PDF document text
- http://geyuping.com/geyuping/uploadfile/file/2021090614471973499.pdfIn PDF document text
- http://richardchong.com/userfiles/files/53201345570.pdfIn PDF document text
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16130a66e703a5---79874743267.pdfIn PDF document text
- http://limuzine.md/userfiles/file/57085532018.pdfIn PDF document text
- http://mayinmaunhat.com/upload/files/28716184054.pdfIn PDF document text
- http://theexplorerthai.com/userfiles/files/pepajowit.pdfIn PDF document text
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/f070e187be50fa062d64180cb74ca253/gijavodoligedapamimisadup.pdfIn PDF document text
- http://regalmotors-jp.com/js/upload/files/siwimovixipaxofaze.pdfIn PDF document text
- https://handinhand-daycare.com/ckfinder/userfiles/files/16309156027.pdfIn PDF document text
- http://prosquash.by/data/42869687462.pdfIn PDF document text
- https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/losigutafakadifu.pdfIn PDF document text
- http://gyogytornasziget.hu/uploads/files/wipokujiwe.pdfIn PDF document text
- http://aatmicscience.org/asuserfiles/file/manasitelataxobivunani.pdfIn PDF document text
- https://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/90173942623.pdfIn PDF document text
- https://kawanmto.org/contents/files/72147078370.pdfIn PDF document text
- https://parfumzone.ro/files/file/lojezifatofulujokigaf.pdfIn PDF document text
- https://nolimitscenter.be/peausitive/images/FCKeditor/file/54250569325.pdfIn PDF document text
- http://thesnowmanicecream.com/ckfinder/userfiles/files/bubotara.pdfIn PDF document text
- https://detskeihriska.eu/ckfinder/userfiles/files/56691883373.pdfIn PDF document text
- https://speakingparrot.com/upload/ckfinder/files/nomikodanesumixidezatu.pdfIn PDF document text
- https://fleuriste79.fr/ckfinder/userfiles/files/kodugojedelipivewab.pdfIn PDF document text
- http://ebd.su/UFD/7623/files/zejupivezu.pdfIn PDF document text
- https://mgc.to/sites/web/upload/files/duzixexonotixe.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_off0000b066.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB066	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000c87d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC87D	11064 bytes
SHA-256: `5814874613efd55b20a19786f5d170742f3866c9e98ac9509e7b76c0f524ecca`
`font_02_sfnt_off0000e1c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1C8	15284 bytes
SHA-256: `3153d993b367a4ebf640733ae4005d02ea19fe2adc349f54dce06311457568de`

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