Malicious PDF — malware analysis report

Static analysis result for SHA-256 07601e5fabc4cfbd…

MALICIOUS

PDF

88.5 KB Created: 2021-08-20 19:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a9bff440d65d90de54a041e76643dde0 SHA-1: 1d1ee9b14e7a482ea25504bf1c5ae5d54b23ba22 SHA-256: 07601e5fabc4cfbdc68ba0218005cfea0338fdf57e2db2d74f242ed48946cc68
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains numerous links pointing to compromised CMS upload storage, indicating a link farm designed to host and distribute malicious files. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16073cb72d7f69---26960983126.pdf In PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607df72f0dfa3---44443328873.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/17880234122.pdfIn PDF document text
    • http://unityproductions.com/upload/files/gezafi.pdfIn PDF document text
    • https://www.newhorizonscrisiscenter.org/ckfinder/userfiles/files/dikapidukivizeso.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/emgme2qh7kv7tl57dmt7gnjfe0/78547965588.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c47955540ca---44313021992.pdfIn PDF document text
    • http://gpmpoolandspa.com/ckfinder/userfiles/files/96234329023.pdfIn PDF document text
    • https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/duxerifoluzixavoni.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1610d75cade36e---54158271588.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/3cdd5042ebb0800e7142016f5e2d9401/65770584063.pdfIn PDF document text
    • https://schmitz.cz/res/file/50812098159.pdfIn PDF document text
    • https://gtnet-engine.com/ckfinder/userfiles/files/81489931503.pdfIn PDF document text
    • http://boatmonies.com/uploads/files/sivufewijaxubowu.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/f63e970f7802663bc2b9a184ba2b65af/54402697933.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609fdd05c55c3---mimeg.pdfIn PDF document text
    • http://norilskgu.ru/userfiles/file/fozikawogira.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160cec0f832f88---47871844580.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/jafum82l4ucsrje9u034v7kfb2/30604052152.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609317f610bf0---jikujufajunilezu.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/1508352f8996ff220f1799d017ac5aa4/bebunowaben.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/wotagejozafidekawur.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/ed369b0c85af0a9e4ef21fd43080b6cd/gemasitu.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/78821265946.pdfIn PDF document text
    • http://rebornfair.com/FileData/ckfinder/files/20210730_7555C1DD602EFB5A.pdfIn PDF document text
    • https://essaidafm.com/uploads/FCK_files/file/dogisagamijudokaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=sinhala+novels+pdf+free+download+yauwana+samindraPDF link annotation
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/wuwamajo.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_off0000f59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59D 16576 bytes
SHA-256: c2988fe30168208f7ef45c449546bbfcff0b141d0a836303a826be6491665d88
font_01_sfnt_off0001204e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1204E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13865 11108 bytes
SHA-256: 59069d2b6825836eb72cfa6602d1cf0ce42be143d1fdd71714d00c1e3a7b7d5b