Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba697a77fa885f4a…

MALICIOUS

PDF

86.6 KB Created: 2021-07-25 15:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3d1c99046898df841bb17d40fa0be315 SHA-1: a6f854dc447a11bbb7f078de2dca91b8027859b3 SHA-256: ba697a77fa885f4ab4b5646f20441b072448e0616b109de797b8ea6c1e4b516b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to direct users to potentially malicious content. ClamAV and ML classifiers strongly indicate a phishing or trojan payload. No scripts were extracted, but the PDF structure and URL patterns are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://zionhillfirstbaptistchurch.com/clients/73368/File/toxadunaw.pdf In PDF document text
    • http://newgatedesign.com/Images_upload/files/bodinona.pdfIn PDF document text
    • http://zoltysnieg.pl/pliki_wyswig/files/32431619730.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16072a5b618c26---fagutaliliva.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/e3ee5fc7e0c8b9f5ee24199dacd3aab0/regujutopisurigepojat.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a538dd41841---dedolilaxefamotisuti.pdfIn PDF document text
    • https://htddienstverlening.nl/userfiles/file/62093145951.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/56355901286.pdfIn PDF document text
    • http://nmglyxx.com/userfiles/file/wogivakiba.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/dqusk3gn35d9i65vl0t1hcuoq5/peforukosomarozegeruno.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160764e4640e02---1925694522.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c361c9bb028c9bc9c37a378cb4e8f9d3/93734353391.pdfIn PDF document text
    • https://firmabudowlanawalczak.pl/web/uploads/files/33899843903.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/209319ff9d114058545d88560f3934af/75492198591.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d6ff829f6---97949034295.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/bg3ba7tqgo5etln2d0u7v2vd5a/20765842448.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606d57e47c6d4---48200114767.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/203745f47bde5b6c9f8bd58054d76feb/53717023822.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f102c96d60a---vuximeguretim.pdfIn PDF document text
    • http://papinchess.ru/userfiles/file/rafuvukefijaxesi.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/a86e8b3e87220093c4c7a3c11d39e4ad/51523752038.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/siniguxixibadevi.pdfIn PDF document text
    • http://hhtaitung.com/CKEdit/upload/files/zumetokaxetenuf.pdfIn PDF document text
    • http://stepsforstarlight.org/clients/c/c6/c668404594a1c08d975ab50c7bec58f6/File/79194051576.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/58c1feae582e072ff0382815b1bbe5b1/woratajixulajedus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=how+can+i+register+my+uan+number+onlinePDF 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_off0000eddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F6 11004 bytes
SHA-256: 75f902b5e39dc10e002c86d7737842847ba8198490859cc6a956ddd3d2c7b1f4
font_02_sfnt_off00011f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F90 17164 bytes
SHA-256: 47a60f9107094a66e65c0a22c131f5b4e846dc0fdee41bd6e34e31bd5101f069