PDF malware analysis — malicious · ca1d5d65fd64ca12

MALICIOUS

PDF

73.3 KB Created: 2021-09-09 02:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: 25b20d7a80d2464114c99ce38945795d SHA-1: 8d8248d09dc23f9c4886e6c33e89819a36509557 SHA-256: ca1d5d65fd64ca12dc8acbb6d70191b60b4e1bac61c2a4379c1448bbb2a5fb9a

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which are hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9973

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.
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://pixomot.ru/uplcv?utm_term=mod+apk+of+score+hero PDF link annotation
- http://turningpointdigital.com/cote_dor_import/admin/ckfinder/userfiles/files/25668514338.pdfIn PDF document text
- http://agro-norwa.pl/userfiles/file/moduvubotusipowoximo.pdfIn PDF document text
- https://tadimtursu.com/image/files/43430191648.pdfIn PDF document text
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/lrq177t281e4hh0lmopouo8ic4/sizuwubip.pdfIn PDF document text
- https://rakowka.pl/userfiles/file/62992404447.pdfIn PDF document text
- https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210903050644.pdfIn PDF document text
- http://circolonauticofavignana.it/userfiles/files/gututef.pdfIn PDF document text
- https://macauroommate.com/ckfinder/userfiles/files/jumeselejevuwakudonogo.pdfIn PDF document text
- https://xn--49st2et51duvk.com/upload/files/tedeze.pdfIn PDF document text
- http://santiagoporter.com/js/ckfinder/core/connector/php/files/97528956363.pdfIn PDF document text
- https://magerp.org/upload/files/30241594199.pdfIn PDF document text
- http://khiconghoixuancong.com/Khicong/admin/userfiles/file/dotapobipekeboratesajuza.pdfIn PDF document text
- http://secureyun.cn/uploadfile/file///2021090810003961.pdfIn PDF document text
- https://www.disbel.es/ckfinder/userfiles/files/94449392741.pdfIn PDF document text
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/f74ec8928cc343775b5e1b8757a03516/zekaz.pdfIn PDF document text
- http://location-appartement-venise.com/italie_documents/files/76442582485.pdfIn PDF document text
- http://heimundsicherheit.de/userfiles/file/puweburelenokozofuxipenu.pdfIn PDF document text
- http://www.wiz-fac.com/uploadImg/file/34396473231.pdfIn PDF document text
- http://hflchw.com/upload/file/xivakoveputawu.pdfIn PDF document text
- http://royalrep.com/userfiles/files/tibugowoguxusazebam.pdfIn PDF document text
- http://pure-chiral.com/upload/files/wekotanut.pdfIn PDF document text
- http://swaving-stalinrichting.nl/ckfinder/userfiles/files/fekotamusig.pdfIn PDF document text
- http://artemon.nl/userfiles/file/92012903357.pdfIn PDF document text
- http://www.bc-arman.kz/ckfinder/userfiles/files/mawitekunedadiputaje.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_off0000bde8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBDE8	16320 bytes
SHA-256: `6a9ea3e2d77ba13b424037478aa1dbab964caebca234a532c8a651d43d81f5e4`
`font_01_sfnt_off0000e7d7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7D7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000ffee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFEE	10464 bytes
SHA-256: `cb34df457f30d1a705df0a635b5e84c63c837297ac5877326c1ff8110aad3843`

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