Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0520cc98dd0448…

MALICIOUS

PDF

83.7 KB Created: 2021-09-03 04:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 93415d44ee9813e6009a3735d45ef496 SHA-1: 838a13a29f85176a60dcd51701e136720b0a5570 SHA-256: 3b0520cc98dd0448e84059e8c70e552bd66a74c3207b73ee11136bda8787e691
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content, likely a phishing page or a further stage of malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://abeess.com/userfiles/file/fisajubudosafidajalisizif.pdf In PDF document text
    • http://gayaarchi.com/userfiles/file/20210717044840.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607efd8328ee4---pusomudowipokapupedaw.pdfIn PDF document text
    • https://wintechindia.in/ckfinder/userfiles/files/65541341437.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/kuvofofikiniwirozef.pdfIn PDF document text
    • http://amicalelaique-guyancourt.fr/ckfinder/userfiles/files/7291440331.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160715d1d23228---gikujupuj.pdfIn PDF document text
    • https://visualarchive.bg/files/xesipegixo.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///66170776484.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c3e9aac1d---kemapawesamuxebaduwani.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/0d2b86eff31cff42d4606fcdc9636130/65410569405.pdfIn PDF document text
    • https://corpeverest.com/ckfinder/userfiles/files/47966274696.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/92869729203.pdfIn PDF document text
    • http://casavacanzesanvito.eu/userfiles/files/suzowuvidivaxigipupaz.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/e946b0d0ff1e2b8ba624838a8d74d1a3/xafotuwejanuvafapepoxo.pdfIn PDF document text
    • http://kimhoatra.com/upload/fckimagesfile/89531879099.pdfIn PDF document text
    • http://makesomenoise.hu/upload/file/51666676700.pdfIn PDF document text
    • http://sage-chem.com/image/files/20210717_100142.pdfIn PDF document text
    • http://yummyschool.com/_UploadFile/Images/file/dupira.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073945e1cd06---serelapomifaraxepevu.pdfIn PDF document text
    • http://tweedehandswikkelaar.nl/app/webroot/files/userfiles/files/pitakeseru.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/567dbc410a1fe42a75a236c5cc58ed20/kavilosivebigojativew.pdfIn PDF document text
    • http://ebiocell.com/uploadfile/file///2021062316430063.pdfIn PDF document text
    • https://t2sc.me/userfiles/xokajagipaminujisaluwif.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/lulazoro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=idioms+phrases+pdf+free+downloadPDF link annotation
    • 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_off0000db76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB76 10700 bytes
SHA-256: 6fd67b2f4497fc333bd514432baae4bc3fbc84d6d71510e9dfc0d643737bb236
font_01_sfnt_off0000f3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CC 20152 bytes
SHA-256: d0f5c170f36503c74ef3ecfd81723f0e5c4956a95d792a95deb6ed712bad8dca
font_02_sfnt_off00012905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12905 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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