Malicious PDF — malware analysis report

Static analysis result for SHA-256 297669b0a0b9c6fe…

MALICIOUS

PDF

78.6 KB Created: 2021-09-17 11:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 02710501bcba5af7bb79c2229f88467b SHA-1: 8af2361364ab74a2636d1ec54c31ff548d01d4fc SHA-256: 297669b0a0b9c6feb0c56106692989f32b29747d7327a4d19eb64d516a825700
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with attempts to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://travellifeafrica.com/ci/userfiles/files/56592578589.pdf In PDF document text
    • http://wimborst-ceramics.nl/public/view/upload/fckeditor_images/file/jegiloxobunigazipovenevi.pdfIn PDF document text
    • http://debeight.net/UserFiles/File/nukidovosefasubogez.pdfIn PDF document text
    • http://e-sheremet.com/img/xokigovowopelaf.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/nunulikaseditojovujaxa.pdfIn PDF document text
    • http://mdknoodles.co/uploads/files/fabitukipimofitemigete.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/tejavul.pdfIn PDF document text
    • http://cannamelis.com/userfiles/file/72265188124.pdfIn PDF document text
    • http://remobudostol.pl/pliki/jogogujonevebevorixus.pdfIn PDF document text
    • http://beijingteye.com/upload/files/97442509289.pdfIn PDF document text
    • http://kajo-frings.de/userfiles/file/wajab.pdfIn PDF document text
    • http://thepnguyentran.com/media/ftp/file/69603518405.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/xopitebimebetupusakutinu.pdfIn PDF document text
    • http://cybernet-ap.com/UserFiles/File/waweb.pdfIn PDF document text
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/38316120011.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/b47a294d63aaae3feb17d21769bf22d7/8311142979.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f049cb2fc8---52244230074.pdfIn PDF document text
    • https://hfbee.tw/upload/ckfinder_temp/files/20210909125849.pdfIn PDF document text
    • http://eg-connect.com/php_codes/Scott/VieauAssociates/code/userfiles/file/6586550782.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/liwazapikupol.pdfIn PDF document text
    • https://uzunlarpeynir.com/dursun/upload/files/38730099757.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/madilunemiwujujeboniror.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=live+wallpaper+pro+apkPDF 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_off0000d01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01D 17936 bytes
SHA-256: 928a600642918d6e0f595ac1eed37df6f7ff0129ecaa84ab1d7e37ca48b62db7
font_01_sfnt_off0000fea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000116c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116C0 10076 bytes
SHA-256: a7ac9e758b9483997f323cfd24715adac9eb53b42a745065b50d87d44bc933fd

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