Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb3391a973e864d…

MALICIOUS

PDF

138.6 KB Created: 2021-06-26 08:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 389fe00db33151d328bc16f92f04c21f SHA-1: c1329002dfc0f887b8c909332fce2acac08444eb SHA-256: 4eb3391a973e864d42d3438573117d001823803ef408b27bc39958ee6ca745e8
196 Risk Score

Malware Insights

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

This PDF document is identified as a malicious phishing and advance-fee scam lure. It contains numerous links to compromised websites and disposable hosting, likely intended to redirect users to fraudulent content. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with an advance-fee lottery or parcel scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9781

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
  • 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 https://archism.ru/uplcv?utm_term=animals+that+have+been+cloned
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/qnfoqgd66s38milclpcol8h9k1/fuwopasese.pdf
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/90418258786.pdf
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/u9feev8qitdnkeanjkkm7p3853/zitategelapimenokiwelene.pdf
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/67be5e100f5fbf309b705fab13e183cf/91159787873.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc113d8cb3d---rolojeratifoxowapu.pdf
    • http://humanitool.ru/userfiles/file/63293697968.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160945acd1a354---41700565549.pdf
    • https://rinducm1.com/contents//files/vamaziremime.pdf
    • http://colorfusion.us/admin/images/file/88008943287.pdf
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d17e28290---1471683914.pdf
    • https://pendekaremas.com/contents//files/kexelafotu.pdf
    • https://alexandrapanayotou.com/web/images/static/file/46755423022.pdf
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/b7d7a7459846f531fa8e5da8d040a378/58874361255.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d23fb5b983e---52707485805.pdf
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/v85ej56ett9qgs04cgmev6qkjn/18853952612.pdf
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0f051e6f5---50040916442.pdf
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095af691347d---mitaxoxefepujuvidelex.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f83b6b8e19---59875410225.pdf
    • http://jakebenmd.com/clients/0/0e/0eef9d569b11303d075d19626cc6f958/File/bozulexufugu.pdf
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16085f5d37c20b---15885777923.pdf
    • https://alternativecarrepair.com/userfiles/file/14197280145.pdf
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/23f47f6f0af45d16c2701d91d373246b/21680475754.pdf
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/57da865be8b0ffd969b680a41caf966a/40010271581.pdf
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019e56.bin
cdc26cca5a9b52e6fa92350a967b2ce52c529a2bc8af9d97d5b00b18c4ac92d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19E56 10720 bytes
font_01_sfnt_off0001b6be.bin
fbefcdfed8720768d413401e65a5fcb0594e2e1e44d36e469867b47fb491e57b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6BE 5408 bytes
font_02_sfnt_off0001ca03.bin
b126ea6b36f31c7645b741e07be1bbd3163c21cf13318fafec1f0d5f0e24906f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA03 22836 bytes
font_03_sfnt_off0002041b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2041B 16792 bytes

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