Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ade69aeb9d1118…

MALICIOUS

PDF

70.1 KB Created: 2021-09-27 17:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 40db70dd8bd4a2b8ddb3ca0f68664c3d SHA-1: 68faf530cb2954d5918b00a685e22d528ff5319e SHA-256: d0ade69aeb9d1118dabd5e2aa5d3fb059d1e5934048a79d4012fbe5276903c3d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs further supports a phishing or scam-related lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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 https://synerhu.ru/uplcv?utm_term=assassin%27s+creed+mod+apk+offline PDF link annotation
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613c09766907f---41052836370.pdfIn PDF document text
    • https://ngenadmin2.nextgenphotosolutions-beta.com/app/webroot/files/file/tudulative.pdfIn PDF document text
    • https://cmottaviproductive.it/uploads/file/17235286402.pdfIn PDF document text
    • http://panel2conso.com/userfiles/file/susikil.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16142c396e5516---96505624507.pdfIn PDF document text
    • https://sokole-tps.pl/userfiles/file/xisikazamewanomugavu.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/wizepubodapi.pdfIn PDF document text
    • https://ambient-interier.cz/files/files/xogigederurogomomolera.pdfIn PDF document text
    • http://auto4-spb.ru/public/images/ckfinder/files/jemefunudetelomatufuz.pdfIn PDF document text
    • http://mesterteto.hu/userfiles/file/8513674098.pdfIn PDF document text
    • http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/zanowidovuta.pdfIn PDF document text
    • http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/74719508075.pdfIn PDF document text
    • http://anm-av.de/uploads/files/24031213733.pdfIn PDF document text
    • http://johnlillylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bosuf.pdfIn PDF document text
    • https://fzclicks.com/demo/files/editor/file/95951112514.pdfIn PDF document text
    • https://lingchuanfloor.com/app/webroot/userfiles/files/zuxupalakipu.pdfIn PDF document text
    • http://astorandblack.net/emailer/userfiles/file/rofut.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/98223029283.pdfIn PDF document text
    • http://essentielles-theater.de/UserFiles/File/femeberoxome.pdfIn PDF document text
    • http://sculecuacumulator.ro/app/webroot/files/userfiles/files/wuxifitusimixitejilo.pdfIn PDF document text
    • http://salman-is.com/userfiles/file/tamapasoripolegaki.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/rmpqbee1kr79jj1tg53u5vh9p0/57630548017.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/devimevugamafukaziwog.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/bi3847un099adtk7jl20gkvp85/vovufezabefutadusokazu.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/14d7j29uf2a8qt0ijrihatqpvo/49651677195.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_off0000b4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B3 10792 bytes
SHA-256: 3b7578bfdb786b8101b1fe5108aeae646e9eea38bb24fd9596f4ddfab57488a1
font_01_sfnt_off0000cd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8E 14620 bytes
SHA-256: 324f645ca99904e2260d885a4e7f4ee8db74e84f7f29d80b644d9ee00bab3214
font_02_sfnt_off0000f280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1