Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf68a948b2b772e9…

MALICIOUS

PDF

348.7 KB Created: 2022-05-01 23:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2023-12-08
MD5: 46fcc0f893be4b16a4bf7528ad8e4274 SHA-1: c8b5fd0c153cc76e0b04cb6b8cfb16493e1326a8 SHA-256: cf68a948b2b772e9399e5f14dfca7eaee0c4c4218f13479baab8e741c543d1bf
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7583

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cafij.co.za/XSRYdR1H?utm_term=cm+to+mm+worksheet PDF link annotation
    • https://tazezesogiw.weebly.com/uploads/1/4/1/3/141300719/1337119.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/98a80839be22dcd5f9693c43f60de21d/lajapuzibejita.pdfIn PDF document text
    • https://kivenawuvu.weebly.com/uploads/1/3/1/1/131163776/tesuvazakoteve-midexizepinef.pdfIn PDF document text
    • https://buzascsaba.hu/userFiles/file/45698700126.pdfIn PDF document text
    • https://xizotuvulozig.weebly.com/uploads/1/3/1/8/131856772/1644149.pdfIn PDF document text
    • https://jasugigikimodo.weebly.com/uploads/1/3/1/3/131383258/c76e75df715.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/36273401108.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16219a74a88b22---55077261652.pdfIn PDF document text
    • http://centrons.com/uploaded/file/1021704217622cc2e3e9a5a.pdfIn PDF document text
    • https://gulijigomun.weebly.com/uploads/1/3/4/3/134350957/litaluzoxoma.pdfIn PDF document text
    • https://gunomelovolif.weebly.com/uploads/1/3/4/7/134735852/naroxufadimulab_pigonona_zamivilalad.pdfIn PDF document text
    • https://tuxowozisilebex.weebly.com/uploads/1/4/1/3/141343597/5426865.pdfIn PDF document text
    • https://wurotifaji.weebly.com/uploads/1/3/4/3/134315076/9c793e3a333f7df.pdfIn PDF document text
    • https://momaduse.weebly.com/uploads/1/3/4/8/134895420/6c31461101361.pdfIn PDF document text
    • http://martonaroniskola.net/userfiles/file/titibijomufof.pdfIn PDF document text
    • https://mugafexuwap.weebly.com/uploads/1/4/1/2/141287884/mobatufoxotexa_nijafedaxorere_poxuzof.pdfIn PDF document text
    • https://fobh.net/userfiles/files/zosepixo.pdfIn PDF document text
    • https://zofoxosexalonup.weebly.com/uploads/1/4/1/4/141431553/walox.pdfIn PDF document text
    • https://napuguzexavuzes.weebly.com/uploads/1/3/4/8/134875267/dukawubumaje.pdfIn PDF document text
    • https://jebapilemesig.weebly.com/uploads/1/4/1/3/141349744/8074073.pdfIn PDF document text
    • https://wolofineso.weebly.com/uploads/1/3/4/5/134598063/xagola.pdfIn PDF document text
    • https://mellorymotors.ru/admin/ckfinder/userfiles/files/60772595216.pdfIn PDF document text
    • https://pelixenebedevo.weebly.com/uploads/1/3/4/3/134338689/7129584.pdfIn PDF document text
    • https://wofixoxabovu.weebly.com/uploads/1/3/4/5/134524794/8e5c79a585321.pdfIn PDF document text
    • https://wazexusevawixi.weebly.com/uploads/1/3/0/7/130776334/fb557f1d8.pdfIn PDF document text
    • https://biwasigefo.weebly.com/uploads/1/3/1/3/131398444/1313064.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/28691222850.pdfIn PDF document text
    • http://hangzhou.chinatupai.com/web/js/ckfinder/userfiles/files/45129103176.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 extracted file (font_00_sfnt_off000504d4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000504d4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000504d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x504D4 18928 bytes
SHA-256: f6f404586837e9e988e5ffc1aebec053e27807799d8b632338e26c2b40674b44
font_01_sfnt_off00053502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53502 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00054d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D19 10180 bytes
SHA-256: 715088a9db28ced19d373ef3f745aa0e0db5b54b7abbb4bd5efde2e44b4c1886