Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea3d01a408db7c7…

MALICIOUS

PDF

83.6 KB Created: 2021-09-03 01:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7196abe8316ca8e3987b54917c2bad54 SHA-1: 76a38161ca505a60d32cb5f6bd85860e8c978ebf SHA-256: eea3d01a408db7c79269242c7a92a234bffaadd94de574b066f587ae37a928c0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm with numerous URLs pointing to compromised WordPress sites, likely intended to lure users into clicking and potentially downloading further malicious content or engaging in phishing. The PDF structure itself does not contain executable scripts, but the embedded URLs are the primary vector for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daa731308cf---jugizorapo.pdf In PDF document text
    • https://abzesolar.com/uploads/files/sajogul.pdfIn PDF document text
    • https://gs-hemeringen.de/ablage/userfiles/files/5003632233.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609495819aec6---91982867990.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077db92a7ac8---xidixedisitosi.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/5f0a0b1f69d2f9ed4d00d9dfd6a86e36/fupir.pdfIn PDF document text
    • https://coluer.ir/documents/file/84241128255.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/o746shnd4og2dgeh4scp8lkfr1/gagobadez.pdfIn PDF document text
    • https://sanaspinler.com/calisma2/files/uploads/wumojobox.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/zipefujezepoboligufabenun.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/71673371814.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/80453017607.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/rimetedatamunilurigarojol.pdfIn PDF document text
    • https://davaocarrental.com/images/file/revenosarog.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/7b1e4c10ca564ceb0af858b2bc413301/zesubu.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/n4hr12776qfqkflrfq9ll2tum4/39068894513.pdfIn PDF document text
    • http://ourgans.org/userfiles/files/tekufulo.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16077e275a21b6---9182102018.pdfIn PDF document text
    • https://privatecambodiatour.com/userfiles/file/guxovejaxifugalakiwewemiv.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e29db33f2e---dubuxudefuxexuwelez.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae990c4af---beredaxokin.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119591bd92fb.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/47307144936.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/40d6ab8e3811e69c61397b0a99e35727/92744366496.pdfIn PDF document text
    • https://termofriz.rs//files/likosigajavujobilekibod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=wagner+power+painter+series+200+manualPDF 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_off0000e38e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38E 16788 bytes
SHA-256: c69e056439ed1a2602245cc6e9071c941040a144c3736ea43ebc154f0733db31
font_01_sfnt_off00010ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE4 11016 bytes
SHA-256: c052dfc8ded77ce42ead19ef3133db93cae8590aad83b9f14cae4bd84c0c347a
font_02_sfnt_off00012895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12895 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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