Malicious PDF — malware analysis report

Static analysis result for SHA-256 b196419048835d55…

MALICIOUS

PDF

122.4 KB Created: 2021-06-30 07:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8e0f3b969d267e22c8a2214e78a0a4dc SHA-1: b582d6318c8a57eeacf97d20f2602b9b2792a02c SHA-256: b196419048835d55a6244ef5a744ebdf8a27ab9bda8a223aa6b84fbb2accff8b
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, designed to redirect users to other sites. The presence of multiple links and the use of compromised infrastructure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160838f07967bf---72622789624.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160ad1cd8b8add---gomagazusejokofademamuk.pdf
    • http://limoride.net/gallery/file/kekumupisomezisapet.pdf
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/33602230541.pdf
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/9rh9ebatc0plinsrafr9uccta3/rirovezesadinaba.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/8d0cec223702ba392f61832b3a1cc1d2/70703668283.pdf
    • http://rivieahk.com/clients/5/51/51325344bd1517f257d6959d5350918e/File/gedapasafukogug.pdf
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/fhrnfnucse39jo0f53s78l9du5/nujomiloko.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06ec42922d---rixonaz.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afa3cf3c6ec---81583825970.pdf
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd67860b2b---sewolulafasipo.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/lrgvrcpb6mpaaap0ulruftc8n4/gexoxopazakiwidoxo.pdf
    • http://lbhodgereunion.com/clients/3/38/38e1f81cb1ac74d12d86c8ba87866b9f/File/57343359625.pdf
    • http://reicar.dk/userfiles/file/kenuwofesekofoputimuxela.pdf
    • http://jyotiacademicpress.org/uploads/file/busovefarujegoxipomo.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16076a3520687f---95567062804.pdf
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/rjqvndh84oq46pvh1k6b4frvt1/2270268166.pdf
    • http://movementlab.dk/userfiles/file/teburugedanuzaxu.pdf
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/4n895tpa5dk2cbqrf9g9jclqtr/wagaxaw.pdf
    • https://louvre.lv/res/wysiwyg/file/29680139414.pdf
    • https://sanruouvang.net/images/uploaded/file/11708271546.pdf
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f420b50f1---lenelozatup.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e631e7913e---bokozilonojuferurewu.pdf
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5d85215f7---xodapumitenefujalasu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=old+town+road+sheet+roblox
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015a09.bin
9ac07318b753ff258aa4dde0aa9fd96fe95649d4d9b8061d05aae7e181bb0d4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A09 16808 bytes
font_01_sfnt_off00017124.bin
0a5b007ecb65e04c7b1f533c6ee1a4a4aecbd4643090c746a832e0de55a16522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17124 21952 bytes
font_02_sfnt_off0001a9f4.bin
dbdad4b22a897ca6108ba9087a08ad233b3444bed70691141a1820f448a8a937		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9F4 10608 bytes
font_03_sfnt_off0001c237.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C237 16792 bytes

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