Malicious PDF — malware analysis report

Static analysis result for SHA-256 409ea96ce3690d5c…

MALICIOUS

PDF

101.8 KB Created: 2021-08-09 21:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: af9cca21d0d17e298a01447e10285e3f SHA-1: de1f3f2b428a87b24e496f32473234bebf08444c SHA-256: 409ea96ce3690d5ce21dc1f1be2c9fc58f805b4d52c4ec95351c7549d4fb042e
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as a link farm and a potential phishing lure. It contains numerous URLs pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier and ClamAV detection further support its malicious nature, indicating it is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://philabc.ru/uplcv?utm_term=how+to+open+lg+phone+back+cover PDF link annotation
    • http://zzzwchem.com/upload/files/wodixobezuxuziw.pdfIn PDF document text
    • https://driftwoodcc.com/userfiles/files/80672021144.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/64300214689.pdfIn PDF document text
    • http://hyosangjo.com/userfiles/file/20210620115652.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/fizuzakodasosuv.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/m7hqqo89g1im6k7sssgcd415m3/lotodavozo.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/55665463633.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/47308eb62e9a0c0726647e7bfc4207e6/kopoj.pdfIn PDF document text
    • http://xetaihyundai.net/upload/files/26061862518.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/556c75d2a66bf7dfefd34a142b8f63ff/46999786920.pdfIn PDF document text
    • http://fedime.org/imagenes/wexemitar.pdfIn PDF document text
    • http://theheavent.com/userfiles/files/zedudekorozusixite.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88a051a4e7---88704401343.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/55293266218.pdfIn PDF document text
    • http://rsti.biz/files/fck/file/42908481028.pdfIn PDF document text
    • https://davaocarrental.com/images/file/runoloxeputolagugosalo.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161086cc2b3cd7---68700061192.pdfIn PDF document text
    • http://drxzhang.com/userfiles/file/nufoxinipugipokuwakoz.pdfIn PDF document text
    • https://listapp.in/ci/userfiles/files/zeviziratotu.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f7693be65---34711472874.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/d2de4e730625222bc50f7f3b3c3dcee6/84247422756.pdfIn PDF document text
    • http://suriyedostlukdernegi.org/image/files/bejituvijujipula.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/8733de5ee8b1f11aa2bdc23ff64d7d39/kevipigasejexuwutab.pdfIn PDF document text
    • 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_off00012ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB6 17552 bytes
SHA-256: d5be61769d4f0c5b663399d5eb5f4a55d0d49caec71695d07552c4f206e7580f
font_01_sfnt_off000158c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158C9 10768 bytes
SHA-256: 29b0df39daa34e5382c948943467b0acccfac23be7fc29db82f00cd04429b1fd
font_02_sfnt_off0001715d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1715D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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