Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e0d4827e5f6a5e…

MALICIOUS

PDF

80.7 KB Created: 2021-08-28 14:58:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 40971147ce2ffd59ee4168fda96fffe3 SHA-1: 83e5b18ce917bf2e2b6266c1cd67ad6b014c4a9f SHA-256: 69e0d4827e5f6a5ee0ad872af63a09aaa4b6bc09cbf6cea31a4cccc20286e9ba
224 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous links to external PDFs hosted on compromised websites, indicating an attempt to deliver a malicious payload. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick the user into downloading a fake prize or parcel notification. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://capesociety.ca/uploads/files/fimifukixapifizogeposolu.pdf
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/37c3a70243072caece6a6996cc483e4f/51414922681.pdf
    • http://asiavent.com/UserFiles/file///18795765722.pdf
    • http://imailbox.nl/images/uploadedimages/file/jomivu.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f64de7d3e---tolixuwajejefemovukis.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849b1b55763---38115015641.pdf
    • http://rund.cz/UserFiles/File/87098868409.pdf
    • http://re-view.online/fckFiles/file/netiwavinijiluwozesapo.pdf
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/9v5tj8erk86hus3oddtlhgam92/16856711877.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cc85a41c5dd---bosorekigaboremetiwimaz.pdf
    • http://hotspot-usa.com/js/upload/files/16304472938.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16070beb5b3bd4---wunaj.pdf
    • http://malagi.pl/user-files/fck/file/45258307070.pdf
    • http://lamelove-zakryti.cz/userfiles/file/20738773079.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff3d06eebb5---89555906658.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160efe842c03d3---65653810769.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b9fe7cffe---potuzipukafexujen.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/610bbae5e5729fcfafd1e47ae7539d2d/87593786337.pdf
    • http://iberia-ex.com/images/blog//file/dewix.pdf
    • https://np21bellapalermoshopping.it/file/13677558304.pdf
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608be8b54cfcc---zalosu.pdf
    • https://cvsc.co/userfiles/file/75693752337.pdf
    • http://rjbmachinery.com/d/files/kunasoki.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=watch+sons+of+anarchy+season+3+online+free
    • 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_off0000d678.bin
e873f258a57c8be60420a1ac156b4c2ad638b1947ba98d1bb30f6cc322f889d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xD678 17528 bytes
font_01_sfnt_off0001042c.bin
f6853677c2c1bd9ca1b88ee431ec8c78fce9e02ea3582315e84fd3421786694e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1042C 10712 bytes
font_02_sfnt_off00011ccf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11CCF 16792 bytes