Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d275b7318cebbe…

MALICIOUS

PDF

69.5 KB Created: 2021-09-05 16:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: dd561073ab07fd3bb23a83c85a9cefec SHA-1: 6530fa3694a4786d6c8131a9b891487981fce763 SHA-256: 02d275b7318cebbe2e7ec74ff420c75396a4191ecba97ff0f9362c627b18ba9d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The document body is heavily obfuscated and appears to be a screenshot lure, typical for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://lesbambousbleus.fr/ckeditor/upload/files/74792001490.pdf In PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/33f9bf3f2f268e66dafad440acd788ac/42664752397.pdfIn PDF document text
    • http://pokewaveanaheim.com/uploads/files/41807847017.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/bc7c4a66399c61cad52901f551ab28a1/30837421745.pdfIn PDF document text
    • http://bapassamarinda.id/assets/ckfinder/core/connector/php/uploads/files/xiforudovofazusiwusu.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/lu3viid9s35sdanmkki3md34r7/46795615685.pdfIn PDF document text
    • http://retco.ge/ckfinder/userfiles/files/4004485826.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/bisakuvoxura.pdfIn PDF document text
    • http://lpxs168.com/filespath/files/20210901042725.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/verekopazisagiga.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/57132251785.pdfIn PDF document text
    • http://stellarvvv.ru/ckfinder/userfiles/files/fosutuwadagalukazagik.pdfIn PDF document text
    • http://vizit-k.net/uploads/editor/files/neribe.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/23771258005.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/25902051011.pdfIn PDF document text
    • http://artikos.pl/userfiles/file/wezapamibosokojumaxuvigi.pdfIn PDF document text
    • http://unicaconsultoriarh.com/images/files/97889204565.pdfIn PDF document text
    • https://imihwa.com/uploads/image/20210828/files/20210828054520.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806badccb16---39803762442.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/q1satvjkk7p3rhj8hn839q2r1d/dorogivojamezewegaxurefuj.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24bb3430ec---dabawem.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///62445648716.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/41cf9ca05c4ad5a95bbadb3bc1313e90/totureperunuje.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=international+business+environment+pdf+free+downloadPDF 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_off0000b353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB353 11004 bytes
SHA-256: 02f7ea5d99bcda42cc30031ac45e5617573ed3e7e56dd2ec038ea0b658309a7e
font_01_sfnt_off0000ccae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAE 14324 bytes
SHA-256: 7ef62c7e0cdbbf1a9a076e9cb8af3870a8efe3507e2f0b6382e1e72caf410256
font_02_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1