Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e963cec57d2015b…

MALICIOUS

PDF

88.3 KB Created: 2021-07-09 20:34:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a1bfbf1076abf3c0446b6f2b4385feae SHA-1: d13fc0e551673b1fba952b6387f2b5a5b2e33229 SHA-256: 2e963cec57d2015b117fb007e52cbb632c780dbc486cfd65114a48a74112a068
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including an advance-fee scam lure and a high ML classifier score. It contains numerous links to potentially compromised WordPress upload storage and disposable hosting, suggesting a phishing or scam campaign. Although no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious content, likely for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://cavusofis.com/images_upload/files/72782529487.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/8d6ac7e0f130c57c18f94276241b4a00/vilarovafazosiwilixalu.pdf
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1acb2c3e1---radikarerekasekinexan.pdf
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c1e80f8b6---60862319263.pdf
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/dhlnnne9ejlrjofncmpiqnfh43/fimasalosizi.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16083d04864932---44320467838.pdf
    • http://vansuloi.com/uploads/userfiles/file/sivekuvunasug.pdf
    • https://mttrasportisrl.it/dati/upload/file/74276979545.pdf
    • https://eseninternational.com/uploads/files/vonevumegofasoxepa.pdf
    • http://labonguyenhoang.com/img-chamthi/files/tovuj.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c2630c95c---nunajoluzoginor.pdf
    • http://vietthanhstone.com/images/news/file/vozebepakutotezewela.pdf
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/24407e22f823562c1f765b043631c95c/niwipomisadavuvatosifamez.pdf
    • http://alfavs.eu/userfiles/file/56974529483.pdf
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160d94aa6ae0c4---xovumulola.pdf
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/5f95494d300d9a4d64e044b0ea291dab/32965259311.pdf
    • http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/7289034703.pdf
    • http://stewartreunion2020.com/clients/2/2a/2a0d9dcdd57715375c9f4393c24df0f2/File/25231831013.pdf
    • http://flooroverstock.com/admin/userfiles/file/belukeduxifor.pdf
    • http://abcbyspu.net/ckfinder/images_store/files/10450516841.pdf
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/k3794fptfupvprmpo26citrdef/pusafifafefifo.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7da14c785---demesugajanew.pdf
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/lowetekurikuwowe.pdf
    • http://centralcogtc.com/uploads/file/13775672409.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb79b19699---31486300463.pdf
    • http://ural-resyrs.ru/data/file/kujademur.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=black+ops+2+zombies+maps+buried
    • 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_off0000f61b.bin
90d4e90bb4abd2d9aa61953768aa7696ba525b57c43f98897ac5ec14d8d23955
pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 11036 bytes
font_01_sfnt_off00010fae.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 16792 bytes
font_02_sfnt_off000127c0.bin
4fdd959d8fde32d7d2e0928af4318eb21300f7f40abc1820958ce81bdbc31b09
pdf-font-stream PDF embedded font (sfnt) at offset 0x127C0 16808 bytes