Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a30368f892d3100…

MALICIOUS

PDF

85.7 KB Created: 2021-09-13 07:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 4d9abedf6c2356b10fe347fbb587e7ee SHA-1: 3e8a65141a0211313807648c0464ed9102b695e2 SHA-256: 3a30368f892d310005e4d1ebbc72d4bee174f9c7fa8699fb3d5e5fc21cfa8358
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated maliciousness. It contains numerous URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://foodexgida.com/uploads/files/dijoz.pdf In PDF document text
    • http://polaryachts.com/res/wysiwyg/file/11170201815.pdfIn PDF document text
    • https://mattress-leader.com/media/lizovefidibexilepixiz.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/69425499570.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/8746918130.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/joweparopiputiravi.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/df3700d627fa807f31a86f602ea8e48a/migigogolilekivegafevab.pdfIn PDF document text
    • http://www.amanuttarakhand.org/ckfinder/userfiles/files/pemoli.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cca165d497---kozog.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/geranobuxofajibokizim.pdfIn PDF document text
    • http://jaluzipro.ru/public/userfiles/file/54137583648.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161371df263b17---12615552646.pdfIn PDF document text
    • https://jancsoalapitvany.hu/ckfinder/userfiles/files/nimujule.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/d0fvg2jp7qrjs7nvlvlnlq3np5/kowirewewe.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/96831101200.pdfIn PDF document text
    • https://fpcofmacon.com/nbloom/fckuploads/file/89122749430.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/000e70c4a4767361d1205931285f3a2a/givupekotulibofufi.pdfIn PDF document text
    • http://quaisetoiles.fr/img_pages/file/75353671997.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1613dfd09ef8e3---nupalomokini.pdfIn PDF document text
    • http://yourbuilding.ru/userfiles/files/44846956041.pdfIn PDF document text
    • http://polins.org/public/userfiles/file/63495437598.pdfIn PDF document text
    • http://b40555.handyfriendship.com/upload/files/fuxanupesavigiburi.pdfIn PDF document text
    • https://tsegypt.com/file/dafigodegirepiwavawukipa.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133d815029eb---92046536577.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=custom+windows+rom+for+androidPDF 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_off0000eaa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA7 17904 bytes
SHA-256: ab63eea273e3ff85eda66ce39a0c84811854a7b276cd63b54cdb50f099ade77d
font_01_sfnt_off000118f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001310d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1310D 10552 bytes
SHA-256: 1888080e7611448957558d461e96b292c5b4db99da6c69a4ccb1dbd17b5f9e96

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