Malicious PDF — malware analysis report

Static analysis result for SHA-256 909c56ce7cbefe25…

MALICIOUS

PDF

98.6 KB Created: 2021-07-03 05:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b0d115545f22d8a6dad04ef42f1bde6 SHA-1: dc61042c9d18af1516bead34f7217e58897dba64 SHA-256: 909c56ce7cbefe25b00a02d7c37f2d5fa4fa5fa4ccbb847c6c6c2c775455bb41
196 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. The content strongly suggests an advance-fee scam, using lures related to lotteries, prizes, or parcel deliveries. Numerous URLs are embedded, many pointing to compromised WordPress sites, likely serving as download locations for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://ketchas.ru/uplcv?utm_term=student+of+the+year+2+full+movie+online
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ea11ddc35---83162103769.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7bc748f818---losomufuxanosokatigesu.pdf
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/18e2c8641e6fba6d07f6ed0c3b34705a/58555023369.pdf
    • http://chinamakina.com/userfiles/file/4457488974.pdf
    • https://ntwbearing.com/UserFiles/File/42892016145.pdf
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160910995c2736---62231074821.pdf
    • http://chizclean.ru/files/fck/file/ruxekumagegaxutori.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd56c146da---27401235999.pdf
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/6ktd8s6kq41mkjb3986tfvh616/zatidifagonex.pdf
    • http://sacoorhealth.pt/site/upload/file/jaxabigikegabujadazat.pdf
    • https://geneolock.com/locktactyuma/userfiles/file/muvex.pdf
    • http://altelaw.com/uploads/image/file/98617558972.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/2ck6j084ju2fgciut28r1cguu3/74555008952.pdf
    • https://addsfly.com/userfiles/file/4864767010.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160879d88c8f79---wanoviwuduk.pdf
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609f872618e4e---37453699799.pdf
    • https://moto-trend.cz/public/files/fck/file/48440876410.pdf
    • http://changdahk.com/upload/vukizegogevupag.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609d15cf12d7a---modiwiviruf.pdf
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d39d2bf3e---78670018036.pdf
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/babc87cb837be0c60059c43cc8cebd71/64548181651.pdf
    • http://ztkammer.at/uploads/file/kiwakurelerub.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a67f9e09898---25602454203.pdf
    • http://permianhighschool1970.com/clients/e/ef/efee9fcbc667252fc4b649c8163d3733/File/pepolumafag.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/2mahl1n88mcp8tr78hrgq6nfuo/ridemaresomepitujiluzamu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011de6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE6 16792 bytes
font_01_sfnt_off000135f8.bin
f5bd793f7b340818509d03c152286c15327b9794b03a6a47f49a3eee775766c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x135F8 17800 bytes
font_02_sfnt_off000163c8.bin
750691377526ca87add6d46dcbf808dcc7ebf9109ae80eb0ac420c57859c87b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x163C8 10924 bytes