Malicious PDF — malware analysis report

Static analysis result for SHA-256 76946869ce5dcf07…

MALICIOUS

PDF

286.9 KB Created: 2021-07-06 11:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3aa48547ee3323fe0fb99746bfdf8b50 SHA-1: b2b71243948583f5027910615b304fe79fc29193 SHA-256: 76946869ce5dcf07dd7b1f30a7407d9cd9bc728f3c0e7975f7314deee56cf205
186 Risk Score

Malware Insights

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

The PDF contains lures indicative of an advance-fee scam, specifically mentioning lottery winnings and parcel delivery requirements. Multiple heuristics indicate the presence of links pointing to potentially compromised WordPress sites, hosting further PDF documents. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content or providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9766

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://afghansolar.com/userfiles/file/fuvunizij.pdf In PDF document text
    • http://seabeachthailand.com/UserFiles/file/saloru.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d711513688---77665377394.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/2f712c9d1d492dd9344c083119910dd5/nupunesidelebalegajej.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/27l4hoifi1c39aa995ggqgnh7t/nivolidagefejanizimuvumo.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7accc9478e---tanosonaforerizanalesesem.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/fff638e1c8ae1dede38dc6f7dad8b527/19414745303.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/21972861575.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160befd66e94b6---buzegiviz.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a0226293e---69124032444.pdfIn PDF document text
    • https://triosms.com/userfiles/file/viwuvewotixumevanotaporik.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c2088bcec---guduvanexenupuv.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb79358bf2---lalilazanutugalivu.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/8aganddo4kti0nirtpbjhdcf56/46723025578.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/c99b3aa3188c67b4ba4139e7b1d4b71c/36407776209.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d63e681b1b9---nowipezewupuduk.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/zubesogatagajirolap.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/a2c03b1c22c51ff694a39cf4d95421d9/43384161136.pdfIn PDF document text
    • http://jagodkaprzedszkole.pl/userfiles/file/11302102095.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/27726215032.pdfIn PDF document text
    • https://sinarwaja.com/account/files/69017751538.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3cab86515---92688661273.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160bfad8ce9c66---papanosu.pdfPDF link annotation
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/c58b4b4eeaa661f79207ff96ead6c369/sifuwibadaxozil.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/16090ce3f29629---vodelenivotogazufem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=robinson+crusoe+chapter+3+questions+and+answersPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00040f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40F36 11256 bytes
SHA-256: 6762e6ce155e9db2d3b49a68a8ffa43248c8b651d67ecfc8629a7d3116dbc868
font_01_sfnt_off00042937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42937 16792 bytes
SHA-256: 1a0d5e4eb24ac0101359f11f740029d271a5bb580e1b46bfdfa7e67e5b6a1401
font_02_sfnt_off000454c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x454C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1