Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0152650cbf0a74…

MALICIOUS

PDF

85.5 KB Created: 2021-06-28 12:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 970e5cec6d62b4f1ace73128da55d326 SHA-1: e7dc681b71ff7397f93b986ab707f667cab6fe42 SHA-256: ce0152650cbf0a74988dd40a57b114db5e5f86cd5be809e10d9324b5d6214a31
236 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML models and ClamAV, indicating a phishing or trojan threat. The 'ClickFix' and 'MFA Lure' heuristics suggest the document attempts to trick the user into running a command or harvesting credentials. The embedded URLs point to compromised WordPress sites and disposable hosting, likely serving as part of the attack chain to deliver a payload or redirect the user to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://queure.ru/uplcv?utm_term=how+do+i+recover+my+password+for+my+voicemail
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/r5qtopv7h5umspq0987cqs9agm/xafaregosi.pdf
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5a87878fb---30370863606.pdf
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/6b9v8vrk57csbjsel90cff7s0k/gojizotakuwivedugi.pdf
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c4c395efe---99870728749.pdf
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608020f42dad4---62985253672.pdf
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bee808b5bd5---89387911052.pdf
    • http://rollfactorytogo.com/uploads/files/panivexeni.pdf
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160852537425f2---rexefefawewakazegubipugi.pdf
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/7857164583b190496c650938ae9c80c7/24445421766.pdf
    • https://brod-plovdiv.com/images/5560580724.pdf
    • https://travelstore.tn/userfiles/file/devafebejafuxeguwejur.pdf
    • http://grabnerestriche.at/sivuvaxi.pdf
    • http://akinmedikal.com/uploads/file/lulezenajumenulo.pdf
    • https://premium-house.uz/images/file/82991896346.pdf
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607c149adc60e---tunet.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/c520770f4836b75acb68ef98ed04a277/55279422781.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b40255b2a---xokaku.pdf
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/8pkcg2ot7b0p0rpbj422vfokq7/nuwumerodurukenijide.pdf
    • http://erulingua.hu/uploads/content_files/files/77645675392.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb36f947e3---93677270393.pdf
    • http://bawaconstructions.com/editorData/file/69790769426.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/305d76e3968e0e6f47261828178051ea/11736149861.pdf
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/7ff823430f1e2221fd47e46489343a2e/59848720541.pdf
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ac56659f313---lanotu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e940.bin
ebb63e302e11b70b6d38420cf0f3f98927d8e77faaebc69e1509c9d2798cb629		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE940 17452 bytes
font_01_sfnt_off00011712.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11712 16792 bytes
font_02_sfnt_off00012f29.bin
9be2ba8faba81a28257a63cdafff17c42e8a789da116587578e111be1db63874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F29 10836 bytes

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