Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd1ecfb67f7d854…

MALICIOUS

PDF

341.3 KB Created: 2021-06-27 23:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ad9c3a8c0c30dd2c7dfdd0293f684dea SHA-1: 4e7298f027321916c9b228c4b040d1f79bd1f78a SHA-256: ccd1ecfb67f7d8549c2d52076c74f93da843280786a069d25f9ca22b84a78950
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that exhibits characteristics of an advance-fee scam, aiming to trick users into downloading further malicious content. The presence of multiple URLs pointing to compromised WordPress sites suggests an attempt to host and distribute malicious files. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely involving the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

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
  • 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.
  • 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=forecasting+time+series+and+regression
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160a3316e5302d---26518798552.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160773967e6ba5---didedewisofazonokomagezi.pdf
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/a0f2f1cfba48ac8c4ca8e817811f9b48/surezer.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ecf430580---40370135203.pdf
    • http://tz5168.com/uploadfile/image/2021/06/05/file/20210605_070433_187.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160b1c8e64819a---95221056735.pdf
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/ogr2bhg7j0pv3n904rdia000l7/48202752195.pdf
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/gl8ktgugqs760guu6vndmv8pel/29193590800.pdf
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/95928342601.pdf
    • http://tokyoto.pl/UserFiles/file/nekubemizularedise.pdf
    • https://anmoul.com/userfiles/file/94999022775.pdf
    • https://textolinguisticsolutions.com/upload/editor/file/20048655477.pdf
    • http://robbes.nl/media/files/vipezapisudo.pdf
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/bc3h7p7lh2hp1j8k58bt4sldk2/13026848419.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8df5ed4e3---zeguvegitepatejolevi.pdf
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/1761168387e5beacb360bae4d5fd5ae7/jomususuw.pdf
    • http://arniestribu.com/campannas/file/jifuraniket.pdf
    • http://sola-brothers.com/userfiles/file/simojotiw.pdf
    • https://verandapattaya.com/userfiles/files/25199657471.pdf
    • http://arniestribu.com/campannas/file/18225715039.pdf
    • http://sochi-vitrazhi.ru/ckfinder/userfiles/files/20888167843.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/14648182858.pdf
    • http://biotop-zamosc.pl/userfiles/file/jiloxaginekowamipa.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_off0004df4f.bin
fbdde61fa7f0b48f61fa31ba01655433d0b21a3580a8e2257afe18b7ffb9d546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DF4F 20932 bytes
font_01_sfnt_off0005161d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5161D 16792 bytes
font_02_sfnt_off00052e34.bin
691d56fbd172e6856727a18da640fb224531272df55b5d9d223ac57e5721b52f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52E34 10644 bytes

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