Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e0dc1384f073e1…

MALICIOUS

PDF

106.7 KB Created: 2021-07-19 10:20:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 50ebef6e3279540b95e3e82c7f18e20c SHA-1: 1d52f39d4ca01cb67b23bbcedcba43d457d4c805 SHA-256: e0e0dc1384f073e1ee9b3c55889774a3a7816c0b5b67b10e98ec018a1474c9b2
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The primary attack pattern involves luring users to click on these links, potentially leading to credential theft or further infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9792

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://fonixkoncert.hu/upload/file/suturuluzokepokon.pdf In PDF document text
    • http://oumkua.com/userfiles/file/sixusuvunasare.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c67540831a2---80553198564.pdfIn PDF document text
    • http://dalboncostruzioni.it/userfiles/files/fenaj.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d199a5e1e---jekatoxawopabot.pdfIn PDF document text
    • http://traiteur-ribot.fr/userfiles/file/koritanipibusog.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/rezumopofadexeluse.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/pokivas.pdfIn PDF document text
    • http://growlink.biz/userfiles/file/99127787404.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/a025a9d94eb67554b28abf61db8dbc15/pefugadabulimuvekigariwus.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c06c2ae5d1b---39075495787.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/44127347197.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/84433e767526546198ac901ec32c4cad/fadozatajemamekag.pdfIn PDF document text
    • http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/bazogeporok.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160ba90473a9cc---19727894944.pdfIn PDF document text
    • https://ceccargiurgiu.ro/userfiles/file/xafapilobisofirobi.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/64102103260.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/v6c7o1hneesr8sg0mqfi2tvl8g/makafuxidupifasefu.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607d57ae78d60---jenob.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160962646e5d94---motefazasekiwaredazoxupi.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c92921eddf6---nonerepemomum.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/9712955635.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=off+to+meaning+in+kannadaPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A1 19044 bytes
SHA-256: c5af38bbfc2bca54207177a8d5bf9dcd8aa962dd71d94cbd8c12de866a8dd59f
font_01_sfnt_off0001490d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1490D 10500 bytes
SHA-256: 1fef6f2d0c281bbed0bc7ac23b7d9e610edb69ceab638eb8db3668b3fe9c1146
font_02_sfnt_off000160b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160B3 17452 bytes
SHA-256: 14910c0b0d5be7c7d2257a4bc4b58a96719b42f942c29c4b42f38a2c99fd5d0d
font_03_sfnt_off00017b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B19 2112 bytes
SHA-256: 3520f2ef680214139e58a66dbd3e2aa3c35f20d7a5fa673f93dd7b7aa7afc877
font_04_sfnt_off00018498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18498 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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