Malicious PDF — malware analysis report

Static analysis result for SHA-256 417dc6fbe23f566a…

MALICIOUS

PDF

73.7 KB Created: 2021-09-21 04:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 934139a66bfb0a77a02f3ab45e6eccf1 SHA-1: c7f979e00f3e0432975ca982d94f913ce8b93acf SHA-256: 417dc6fbe23f566a738305f249a81ddb3050b156028e90c779ceeb3290b8425a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's used to redirect users to malicious sites. While no scripts were extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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 http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/s6jksr3hlphd3sb2l25ehldvl3/70035129600.pdf In PDF document text
    • https://illinoisfiscalpolicycouncil.org/app/webroot/userfiles/file/fevazezawerasupalevexuxu.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/files/56467019250.pdfIn PDF document text
    • http://fioredda.com/userfiles/files/rixopogasukeweverovuxav.pdfIn PDF document text
    • https://vidaleve.ind.br/ckfinder/userfiles/files/fikozarubidu.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/fijevadogegume.pdfIn PDF document text
    • http://kapfenberger-schuetzenverein.at/userfiles/file/41618332631.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/22343266586.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/xajizipopimefavu.pdfIn PDF document text
    • https://ckv-siemreap.org/ckfinder/userfiles/files/suvezizovawujoluxajig.pdfIn PDF document text
    • http://nepalbestcargo.com/userfiles/file/fuvet.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161430974476ec---52003982264.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/161490499d3f67---vanisimirinadawezupazebul.pdfIn PDF document text
    • http://purel-biopharm.com/upload/files/xozobijixuferevis.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20210918_091801.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/161333fe8853f4---18697247399.pdfIn PDF document text
    • https://mertlakustika.cz/images/pages/file/wisekewonafisaz.pdfIn PDF document text
    • http://dedanskecasinoer.dk/userfiles/file/71041180347.pdfIn PDF document text
    • http://extrastyle.ee/ckfinder/userfiles/files/numafonixijajatuganewudub.pdfIn PDF document text
    • https://penzehir.com/dorceiys/ckfinder/userfiles/files/96796276313.pdfIn PDF document text
    • https://bomberosdenavarra.com/userfiles_nexo/files/60275574631.pdfIn PDF document text
    • https://alubiasdetolosa.com/files/galeria/files/muginaretuve.pdfIn PDF document text
    • https://menokatea.com/ckfinder/userfiles/files/bulusupimabuwupatome.pdfIn PDF document text
    • http://deforma.it/userfiles/files/lezezelagebepan.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/fb1bce677ed4c4fb87f6b684ea4cdf71/31694569274.pdfIn PDF document text
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/72106898974.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=pubg+mobile+lite+mod+apk+hack+download+0.14+6PDF 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_off0000baca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBACA 11596 bytes
SHA-256: 4db08e5ea01c74aac6b7c646b57f63b73c57003e52cfd1d08dae272cf22b7a54
font_01_sfnt_off0000d5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D2 16028 bytes
SHA-256: 16c7e7a1ea6b5ee6d32bd5f4e03c2c9f8400501a3f48d7781ba44f0e0363ae5e
font_02_sfnt_off0000fe99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE99 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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