Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60e10d416be85cb…

MALICIOUS

PDF

79.9 KB Created: 2021-09-18 07:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 911c7dc3c9787159e1b662d31e5aede6 SHA-1: 73798784e661825f7115d4b7a90dc0b111dcd5f6 SHA-256: c60e10d416be85cbc35004309d67cd2e4a2d1779062dc874ad5970ce1454551f
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing embedded JavaScript, which is often used to initiate malicious actions. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass security filters. The presence of numerous external URLs, including one pointing to a potential payload download, further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://garglob.ru/uplcv?utm_term=send+large+files+from+phone PDF link annotation
    • http://irvine.songhakbbq.com/uploads/files/tavutubaxagesa.pdfIn PDF document text
    • http://cuspsurgeons.com/userfiles/file/subikejijeru.pdfIn PDF document text
    • http://thai-apsproducts.com/file_media/file_image/file/57757901102.pdfIn PDF document text
    • http://dighakanchaninternational.com/FCKeditor/file/wilej.pdfIn PDF document text
    • https://infosantiere.ro/userfiles/file/jagoj.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/vifunanebebenepatasedor.pdfIn PDF document text
    • http://chonburi33.com/userfiles/file/37468680116.pdfIn PDF document text
    • https://fleuriste79.fr/ckfinder/userfiles/files/papefopodenazodufujivu.pdfIn PDF document text
    • https://e-tta.com/app/webroot/userfiles/files/48155101730.pdfIn PDF document text
    • http://elskup.pl/images/assets/file/66284472065.pdfIn PDF document text
    • https://52fantasies.com/home/holly/public_html/ckfinder/userfiles/files/wolekivugujebikusawoga.pdfIn PDF document text
    • http://apex-architect.ru/images/file/42621500152.pdfIn PDF document text
    • https://bookmyexcellence.com/bookmyexcellence/js/ckfinder/userfiles/files/wojinupejovutipufar.pdfIn PDF document text
    • http://chafewyuok.handysociality.com/upload/files/18331449353.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/72469755003.pdfIn PDF document text
    • https://speculatio.in/userfiles/file/guburukefelulepelanavoj.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140a265475a4---35443855396.pdfIn PDF document text
    • https://diphong.com/uploads/fometile.pdfIn PDF document text
    • http://travelbilet.ru/sites/default/files/file/rajirumesasu.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613cad823922b---62467313624.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/84006639878.pdfIn PDF document text
    • http://vietdubai.com/userfiles/file/jakorifewisafotaki.pdfIn PDF document text
    • https://abisspaandboutique.com/nbloom/fckuploads/file/sofaxo.pdfIn PDF document text
    • https://coil.hk/upload/files/zazaganiji.pdfIn PDF document text
    • https://theipbuzz.com/images/file/vidavikewobiwusatuf.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/17533326720.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.

FilenameKindSourceSize
font_00_sfnt_off0000d4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CF 10920 bytes
SHA-256: 0c392ffb9ee9e8ffd033688a92d543e39436a3120c8ad36c64f8cee20bbf0fe9
font_01_sfnt_off0000ed9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9D 16916 bytes
SHA-256: 9434c616d8ef305511b80ae123899ea00c685536a687cf7dce16729b3e169d1c
font_02_sfnt_off00011996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11996 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1