Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d1db769b6ea8de…

MALICIOUS

PDF

88.6 KB Created: 2021-09-05 11:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: 14bc93e3fbe75ffacc50d5840db10538 SHA-1: 5ac94e4813ddfbf9135b54e88b46355d77637bab SHA-256: b9d1db769b6ea8de7f159e57a3c5aaee17c3941df2dea81597ebe3a7654643c1
176 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, several of which point to potentially compromised or disposable hosting, indicating a likely attempt to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, with the PDF likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the presence of multiple external links and the high confidence score support a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://aqbnb.com/uploadfile/file/9461334033.pdf In PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/ab4e7bbe696a18ec51ea950d30aa091b/87840103800.pdfIn PDF document text
    • https://gawwaclsc.com/app/webroot/upload/files/58345323749.pdfIn PDF document text
    • http://wphs69.com/clients/1/13/13dd0a1135c99f886ff4006aa3c820ba/File/50165593099.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/mopanubidin.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/7f196b3f1b008255dd06be6a135dc5f9/dilikomewinum.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608578061a7cb---fesawokixewenire.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/teduxalam.pdfPDF link annotation
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/m5akttt136fp30d941c6k7qqoj/38276928612.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/b8138085e2e72106b2b1f6285c436dab/tosase.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607efcc1e341a---28116841381.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/25b6bf0c407f1321cfbd42ef3ac7f011/27206566844.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076237e4a475---linogesomamisovitafege.pdfIn PDF document text
    • http://muslimofwestbengal.com/mwb/editor_upload/files/4802853207.pdfIn PDF document text
    • http://tuvanthanhlapcongty.biz/upload/ck/files/berajifefofa.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cf45c667e91---gusasotasadinuwesi.pdfIn PDF document text
    • https://www.leasing.net.in/ckfinder/userfiles/files/minovuna.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076378ea14b8---wuloxewiwok.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/96b834c81e4b270ccb5fb21ab7b571d0/94159435506.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/rajojaganolonilikowebado.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d9e0a10d719---nazobar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=bangladesh+mrp+passport+application+form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF221 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A38 11188 bytes
SHA-256: 6085dece0f3ef5276a684c31c28853186bfc43b4752647a5ad42c4f11f455047
font_02_sfnt_off000123f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F5 18036 bytes
SHA-256: 05ac8d4f7739333c6782f43ad9aae4fff5cb4ff29b2ff1444f0efe4675705b95

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