Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bdfa0934b5217a8…

MALICIOUS

PDF

99.5 KB Created: 2021-06-26 10:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 181f6e1bfe852653ec03857a33b1ce0b SHA-1: 62c76c93f8701c8edea38c1ad0f8ddd1fc1113b4 SHA-256: 1bdfa0934b5217a803f9a059165d495c7cf7a46983c43aa5ab3096c4fab5757c
236 Risk Score

Malware Insights

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

The PDF document contains a lure for payment redirection, instructing the user to copy or paste clipboard content into a shell, likely to execute a malicious payload. Multiple heuristics indicate this is a phishing and potential trojan delivery attempt, with ClamAV also flagging it as malicious. The embedded URLs point to compromised WordPress sites and other unknown hosts, suggesting a distribution network for malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/c16023cf82f47bb79666a8b757962d7a/lomikot.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9cf899062d---xobegujisuwuze.pdf
    • https://yuss.it/file/verizegamibu.pdf
    • http://maychamsocda.vn/images/userfiles/file/93568337862.pdf
    • http://extintoresorigen.com/images/editor/2068448301.pdf
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a7869967c5f---jiromixirawusolewo.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c656b72bedd---pifogoromibamozut.pdf
    • http://cana.vn/uploads/userfiles/file/fumanubovepoxanefeliva.pdf
    • http://ahkjt.com/upfile/file/62314815885.pdf
    • http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/77100484867.pdf
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160725a10414e4---fifapimopowuxusirogijidum.pdf
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f96937c508---rupolexidijurokiviji.pdf
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160af8f5520247---vuzowojenibugij.pdf
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/836273255e26f02734c2e2f64ea14a6a/maxupaginebera.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f86e54334---75635304012.pdf
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/d9bda34f47c647dfd636485b5a83f62b/kosexazimavuj.pdf
    • https://fotojursa.cz/userfiles/file/jenaxed.pdf
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609e028096aaf---sariw.pdf
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/02f7dcd93a78ddeb03bca8624af8e5c7/fenawura.pdf
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/896335b57c4425484a4b1f11fa19114e/nuretaxevopudunisume.pdf
    • http://www.verneteco.com/ckfinder/userfiles/files/5359925005.pdf
    • https://pabrikangka.com/contents//files/gulegizeg.pdf
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/da6c4c2acad33ff06d0cb26bae6af80a/futevomujatufi.pdf
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc2a2e59f84---92852057884.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=root+android+7.0
    • 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_off00012305.bin
ae46844baa69975c9a43f925257d9bf13c039dd9879855b72202abb7b7649a7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12305 10176 bytes
font_01_sfnt_off000139ee.bin
a48cb76cb27a9af1bd7d20becb16c6df26a80b6fd3f64b9537171ab446c58d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139EE 17348 bytes
font_02_sfnt_off00016789.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16789 16792 bytes

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