Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f49180067261fc…

MALICIOUS

PDF

84.2 KB Created: 2021-09-13 03:14:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: fd087d644e9f4cac4d0114a30a12c783 SHA-1: 2fe08caad38c4e5ee619e773e5d22463477d6e83 SHA-256: 06f49180067261fc156c36541efdac61685d2a4026b62cb98a30ac5130f41d02
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of external URI and link farm heuristics confirms the nature of the PDF's content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://medvor.ru/uplcv?utm_term=codes+for+pokemon+go+2021 PDF link annotation
    • http://archiprojektai.lt/app/webroot/uploads/userfiles/files/godisosimofapokojajomizab.pdfIn PDF document text
    • https://get-insurance.in/ckfinder/userfiles/files/49361481410.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/27499353490.pdfIn PDF document text
    • http://jullien38.com/ressource/site-image/files/63476036167.pdfIn PDF document text
    • http://gestioniarmatoriali.it/67552373192.pdfIn PDF document text
    • http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/53324939070.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/87619496325.pdfIn PDF document text
    • https://dzido.pl/userfiles/file/99312742503.pdfIn PDF document text
    • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/69470814161.pdfIn PDF document text
    • https://castel.ro/userfiles/file/59109082964.pdfIn PDF document text
    • https://eko-briketes.lv/userfiles/files/52312882359.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__61378144A9487.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/zobitubedaj.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/kusunomikefobojadarate.pdfIn PDF document text
    • http://cornaredo.gattinonimondodivacanze.it/themes/userfiles/files/mamaluzilotataderidat.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/80455410861.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613c47a1b36f3---lewamitomeridogi.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/56596907388.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/aef5ed2cee4ba13c95488bc9418a9323/35820393823.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/55935415469.pdfIn PDF document text
    • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/busixovoguwaxubep.pdfIn PDF document text
    • https://slezanie.eu/userfiles/file/josozat.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/5946f1d6a6b633a2f28d9ea32c4cddce/33452326069.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/66348502228.pdfIn PDF document text
    • https://cakamuzejs.riga.lv/ckfinder/userfiles/files/jazivinikerederagamef.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F4 10860 bytes
SHA-256: 19a60f7c741a9064aa0204b405308a8af731f98d4a4b10ba616f6a6d3afd284c
font_01_sfnt_off0000fbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDE 18488 bytes
SHA-256: 042f03fcd3fc05dd261f441be2d299578ab0ec88388d471861349bfbec7612a5
font_02_sfnt_off00012b89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B89 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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