Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed62fccada1af973…

MALICIOUS

PDF

70.7 KB Created: 2021-09-28 06:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c88e49a43e64ca252063b62091fce082 SHA-1: 48b909f8d630ec5c25cbf487ceab93b7683d5880 SHA-256: ed62fccada1af9730bd29689753d9725f4e0d387802308e7d68c306b5c6090f0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous external URIs pointing to various domains, suggesting a link farm or redirection mechanism to distribute malicious content. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a deliberate attempt to host and link to potentially harmful content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 5

  • 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.
  • 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://drafthe.ru/uplcv?utm_term=download+cheat+idn+poker+android PDF link annotation
    • https://eownauto.com/uploadpic/files/mivedo.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/vatasawojuzunuxemim.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16135f1ec740f3---64309446898.pdfIn PDF document text
    • https://hargagila.com/uploads/image/files/wumilujuxutisenedive.pdfIn PDF document text
    • https://t2sc.me/userfiles/kiwojorinejanifipokifuwav.pdfIn PDF document text
    • https://ccaquebec.com/userupload/files/duwedupurumumujejori.pdfIn PDF document text
    • http://mastrodibaglio.it/userfiles/files/23243514133.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/tuwewegesanasomuxelu.pdfIn PDF document text
    • http://alacarte-husum.de/userfiles/file/24978592605.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/1a8ecdec72f006f36d5eb228f094604e/redotaxawefumog.pdfIn PDF document text
    • http://www.kotolantopeni.cz/files/30208517028.pdfIn PDF document text
    • https://kralpin.com/calisma2/files/uploads/11980927754.pdfIn PDF document text
    • https://virtrade.gr/userfiles_lybo/file/fesemilore.pdfIn PDF document text
    • http://sergeybazarov.ru/file/vokemegalawupam.pdfIn PDF document text
    • http://www.ville-dammarie.com/ckfinder/userfiles/files/rodivisu.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/wimituxubebuzijawivov.pdfIn PDF document text
    • https://groupekineconcept.com/userfiles/file/53759963719.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/40003351147.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/161349f983d82f---53400876595.pdfIn PDF document text
    • http://studiotecnicoligioni.com/userfiles/files/37357362898.pdfIn PDF document text
    • http://eortak.com/img/fck_temp/file/bodubugawikuwosowix.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/66456352675.pdfIn PDF document text
    • http://atlonnuri.org/UpLoadImage/editer/files/49139556008.pdfIn PDF document text
    • https://kueapem.com/contents/files/webelaxesis.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_off0000b0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EC 16856 bytes
SHA-256: 46b735154142ddd5b8ee2835f566a8dbffaed04c81a5bdbd62bf89dccdb30bff
font_02_sfnt_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 10620 bytes
SHA-256: ad74b4c29adf7a82c7f0a2e6631ea43785de8a83ccb3eb01d640308c43eb7074

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