Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a318178271a802…

MALICIOUS

PDF

122.5 KB Created: 2021-06-30 08:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c8482dfda328364a0e42afc60896f94d SHA-1: 7eb67b5a3e9eb1e819f8a2e1127210a47a10310b SHA-256: e2a318178271a80284406a88bab130340408561ffa0458887793d06abd85b9b0
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicate this PDF is part of an advance-fee scam. The document contains numerous links to external PDF files hosted on various domains, likely serving as a link farm to distribute the scam content or to host further malicious payloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 6

  • 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.
  • 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 http://championshipsportsrings.com/clients/23492/File/tizafekosunefibijaw.pdf
    • https://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/91ac2e18a4bfc5260ffe42fa09e96ee1/60331845905.pdf
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/b76qn1mrchcjf7o537ojpbfkm3/92937190972.pdf
    • http://ahkjt.com/upfile/file/gupapaveva.pdf
    • http://modellszerviz.hu/userfiles/file/24698479544.pdf
    • http://architettogherardi.eu/userfiles/files/wuteku.pdf
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820a24225ac---9193801162.pdf
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/7d43d551460a7f6ba05df33e9faaf344/45921949120.pdf
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c952af8b188---sibowakebekidokiroteluguk.pdf
    • http://talleresjpg.es/img/file/9742948913.pdf
    • http://soflocops.com/clients/67403/File/17725557219.pdf
    • http://pensjonatagat.pl/userfiles/file/15026342137.pdf
    • http://sushiosushi.com/uploads/files/wolidufamixobalodiz.pdf
    • https://pass-eco-energies.com/ckfinder/userfiles/files/67139957471.pdf
    • http://vietthanhstone.com/images/news/file/bizurepir.pdf
    • https://gruppopolidori.com/upload/image/file/2913635910.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/1c82215bdcf21e3b342b1beb9252de7f/71693430255.pdf
    • http://www.radiooro.com.mx/media/images/uploads/files/nijarepuma.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cb0890bf39f---34524488048.pdf
    • http://axiomestates.com/userfiles/file/punivuwoxipefopalosaxira.pdf
    • http://budoprojekt.eu/obrazy/file/89213578660.pdf
    • http://bahtiyardishekimi.com/fckfiles/file/jewenejeko.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1fe669505---natinifukafafo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=fibber+mcgee+and+molly+radio+show
    • 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_off00017bb1.bin
5a0bdc179cabe940069c552a62a5a2c2a449bcb990b17ad408516646f884660a
pdf-font-stream PDF embedded font (sfnt) at offset 0x17BB1 18156 bytes
font_01_sfnt_off0001ab9d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB9D 16792 bytes
font_02_sfnt_off0001c3b4.bin
25fbc381e85faac8af8acf5ab364fb74424cc096624ed0d8529f70377713595a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3B4 11036 bytes