Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee12a024795d7db…

MALICIOUS

PDF

185.3 KB Created: 2021-08-08 06:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a9c40562d41a47fb347fef24ce44b7ad SHA-1: 5d58ad493068b7e0be4d2b7c0a2dd6eba7289a27 SHA-256: 4ee12a024795d7db193a59e55a1a8beb159e317fa4e32db09b41c25d8f4dc0d4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, several of which are hosted on compromised websites. The presence of 'utm_term' in one of the URLs suggests a potential SEO poisoning or phishing lure, aiming to trick users into downloading malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9520

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pixomot.ru/uplcv?utm_term=ben+10+omniverse+games+free+download+for+laptop
    • http://resheto.ru/users_images//fck/file/pazeninadabenibukokapej.pdf
    • http://www.allatpatikapecs.hu/images/file/meduxatareronofukulevo.pdf
    • http://slhs1958.com/clients/18590/File/vufabot.pdf
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9932b3ecb---23175433997.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073db4d9b45a---rejupaxigeribupekafa.pdf
    • https://twinslock.com/ckfinder/userfiles/files/37840873207.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/b849efe14e10cb975e2beec9dc084622/53447517621.pdf
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/qt4peo1lel690kaf90r1i7t3d6/gutekenosejikafuwone.pdf
    • http://worldofpacifiers.com/editor_uploads/system/files/dusexolano.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940d1724e90---lovojonilefa.pdf
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/7qhu55rsm5qf8q4gbc5af5ra2c/fekomagaliroworanijibeki.pdf
    • http://studiomontironi.eu/userfiles/files/sogaruwexibomolaxil.pdf
    • http://vallovin.it/userfiles/files/damep.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a31efe32f18---63432778966.pdf
    • http://www.yemany.com/yemfiles/files/vebuno.pdf
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c30620b819a---35977603352.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610f17477ea4f---99692876158.pdf
    • http://morecoredesign.com/images/imageUps/files/xavafosujore.pdf
    • https://pensiuneavalentina.ro/app/webroot/file/18490484220.pdf
    • http://theettiaresottawa.com/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/9694175475.pdf
    • http://evolutionchonburi.com/userfiles/files/85852856432.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/dojenaberenujivutep.pdf
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/9f4c1bbf52d2a8b17817927950b00291/74838101065.pdf
    • 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_off00025d44.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25D44 16792 bytes
font_01_sfnt_off0002755b.bin
7490367285b49b6954f508767d4f45b5021fad9ee48b652927af87ce6000ce53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2755B 11220 bytes
font_02_sfnt_off00028f86.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28F86 16092 bytes
font_03_sfnt_off0002a4c7.bin
85026cac980188b9c0d7939befcc2000812b7a0d2544bb300e5d69de849be250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4C7 18460 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.