Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc22ba225d898ce…

MALICIOUS

PDF

70.1 KB Created: 2021-09-06 12:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 456c3e039b09273f615c62ae7002b7f1 SHA-1: 3c883b414b2361fecfe3d7160a06eaa785ced9ff SHA-256: ddc22ba225d898ce826a52f729535a916976ab1cc0b9bbc3119ba56b097d76f0
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. These links are likely intended to lure users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160838e8094b9e---71496244834.pdf In PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bec4224d37e---kurogodumagok.pdfIn PDF document text
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078dd6a3a1c0---14070069579.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/s61di5hkuhuhdplf44c2vbgfoo/sisamobonimufubijapa.pdfIn PDF document text
    • https://astoraccessories.com/uploads/ckfinder/files/xekifilupavorofuxif.pdfIn PDF document text
    • https://tenfci.org/userfiles/file/limafamabozidikuledadokek.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/87925656346.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/lonobeporewigipimek.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701e093b51b---ranalivixipugubivawon.pdfIn PDF document text
    • http://barcelonahotel.vn/UpLoadFile/file/12446117172.pdfIn PDF document text
    • https://0286869143.com/editor_images/files/19023570152.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb16b68273---mimanipunutunasifojofu.pdfIn PDF document text
    • http://bekescsaba.varosom.hu/userfiles/files/6785230656.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/bemadininikata.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/e1d29aba9b43cfdec32c1f09854696fe/tikasakanezonuge.pdfIn PDF document text
    • https://livstyle.ro/home/livstyle/public_html/uploads/files/15823946913.pdfIn PDF document text
    • http://elitvorota.ru/f/file/40706204782.pdfIn PDF document text
    • http://cuacuonnhanh.vn/Images_upload/files/64676283438.pdfIn PDF document text
    • http://gabortech.com/admin/file/suxegebegukugi.pdfIn PDF document text
    • https://icoachyou.biz/images/ckeditor/files/73941386735.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/65513006694.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a527f007edb---rapiwemitiwapunizez.pdfIn PDF document text
    • http://lueckerreunion2020.com/clients/e/eb/eba09433058400eda594a485f9004317/File/34990373874.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=panipat+war+3+in+marathi+pdfPDF 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_off0000b137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB137 10556 bytes
SHA-256: 1461719a4126f22548e269432e3bd6a1efb19ba1aebe3d50ef170cd80d30855b
font_01_sfnt_off0000c917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC917 16428 bytes
SHA-256: 10adbd211232c073ee909375f01e803ac5df3b8136468053d2ef6b2197bf496d
font_02_sfnt_off0000f2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.