Malicious PDF — malware analysis report

Static analysis result for SHA-256 488eaddd893f57ca…

MALICIOUS

PDF

74.2 KB Created: 2021-09-20 01:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fa1ad34a1f7219949d2f1c9395a1ddbc SHA-1: f86c05415c3c2176866a8b5303685ca1e89c963b SHA-256: 488eaddd893f57cab600c51c5fa910f112367e2beb793b5f18321299ae44998f
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple unknown URLs reinforces the suspicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614233f27a151---vawomin.pdf
    • https://zlato-stribro-investice.com/upload/files/83686598737.pdf
    • http://beccaro.it/userfiles/files/mebako.pdf
    • https://keralahappyjourney.com/ckfinder/userfiles/files/gewavagusugipudigiketera.pdf
    • http://studiodugnani.it/userfiles/files/gurawalifukelurowa.pdf
    • http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zufadirur.pdf
    • http://surausa.com/uploads/files/52673382829.pdf
    • http://bowlingkillers.com/imgdb/files/wonakomigokok.pdf
    • http://sdds.be/userfiles/file/zovititunetalajesivezel.pdf
    • http://abc-tel.ru/data/File/vukavupib.pdf
    • http://alimentosldm.com/userfiles/file/42348644527.pdf
    • http://ahzycw.com/upload_fck/file/2021-9-6/20210906094355234708.pdf
    • http://nowator-zpu.pl/userfiles/file/wudotusuwakekifome.pdf
    • http://springgalleryng.com/Images_upload/files/82084738299.pdf
    • http://borneneskontor-landsforening.dk/userfiles/file/maruvijup.pdf
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161321ec7c877c---86326491736.pdf
    • https://creativenursery.net/home/creative/public_html/ckfinder/userfiles/files/19555190462.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141d5335e579---17202673504.pdf
    • https://ienter.bg/files/rurotemadikixaripujoxozur.pdf
    • https://wolfgang-photography.com/userfiles/files/80681302680.pdf
    • http://www.ktgroup.co.uk/ckfinder/userfiles/files/31026319668.pdf
    • http://monkey-do.net/userfiles/file/rewoxozuzenapekukabenug.pdf
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/de4169fcc24a0262415f039345a1c4be/83724957216.pdf
    • https://mt-creativestudio.com/ckfinder/userfiles/files/90474002892.pdf
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/fe69b8ad938fec40073b47538fd7008a/zazelurinemumox.pdf
    • http://ukwoodrecycling.com/userfiles/files/wegepuzed.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=voice+changer+for+meme+zip+file
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdef.bin
a41240454d1e0e9cc2589068903295d8dbad125ebd3bad4aec6374c6ec4ec7be
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEF 17384 bytes
font_01_sfnt_off0000ea24.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA24 16792 bytes
font_02_sfnt_off0001023b.bin
dcf7d24a35c0a9ab27d2627d617bfb261446145fa177eab174f76da6aadad7e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1023B 10688 bytes