Malicious PDF — malware analysis report

Static analysis result for SHA-256 fceda26ccbafa08b…

MALICIOUS

PDF

213.5 KB Created: 2021-07-21 12:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eb567b65a47a8e965d4843ad623bfa59 SHA-1: 4839f276e784128ecc5c85476c99f76f1e88d77d SHA-256: fceda26ccbafa08bb4a7b9ec539339ce322b223ff51fbaee10e876f9c5d1ff79
126 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to compromised WordPress sites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lead the user to a malicious payload or phishing page. No scripts were extracted, but the embedded links are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9852

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
  • 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.
  • 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://uleiuri.ro/userfiles/file/95921625669.pdf
    • http://nano-vip.com/ckfinder/userfiles/files/lafabazukunusobujivawadiv.pdf
    • http://aaaexpressac.com/userfiles/file/metexowaliv.pdf
    • http://gpn1971.org/clients/a/a2/a25689677492d603657f1241a2a69ea8/File/69603825793.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607942f5a6dc0---tipukeforawa.pdf
    • http://svaz-podnikani.cz/files/file/22741548459.pdf
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d76a127b0---vewat.pdf
    • http://cosyromania.com/media/file/lisekeburitudiv.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/md21m8u044lbinh1e1nca4035i/42952273489.pdf
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1609070c1c842d---17884209101.pdf
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/7b838b35f496fdc219ab84ea1830e79a/25179141253.pdf
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0528414612---17637405421.pdf
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/50020933cd52c3904d6fe555b29da9d4/tixafusolixi.pdf
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad4c40b03e---96395374069.pdf
    • http://ridendo.cz/files/file/wexilop.pdf
    • http://studio5r.com/userfiles/files/lilulanofovarodefew.pdf
    • http://maraulsan.com/ckfinder/userfiles/files/jojis.pdf
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/jhte0udsr1i7hgi4f350g2hgnl/lepumizonunuwa.pdf
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608728316e2dd---37525328558.pdf
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/f7acb5a1429b3cfc168ce12dabb10450/nirunarinidumuwe.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/0df8d06d0744713187dbb9b3961f3961/343407546.pdf
    • http://townofwinslowin.com/flash/townofwinslowin.com/file/vosizijiwitelijadep.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/75dbv2gidij69qhkhqcvacr7m0/11516092336.pdf
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec40ac4b2b2---65849263346.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=assassin%27s+creed+game+chronology
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e4f6.bin
ea03c2cce128020992efbfff2c94c0b3cc87d4f66eb2e24b24bf4f4aefb63664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4F6 21100 bytes
font_01_sfnt_off000316d9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x316D9 16792 bytes
font_02_sfnt_off00032ef0.bin
f2f0a08f7478a2c3360211e24fa2aa908b44366ca371420d2784c45a970eb178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32EF0 10848 bytes

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