Malicious PDF — malware analysis report

Static analysis result for SHA-256 683bd98a48d799c7…

MALICIOUS

PDF

782.9 KB Created: 2021-06-02 20:34:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e9dee4a94f01335e51302c51450a1c0c SHA-1: b0935b415580bf299c2549076d424aebac67702b SHA-256: 683bd98a48d799c72448278b75eec3ef9edd5d74785829202daf27e2e5b7f37c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It impersonates Disney, a critical finding for credential phishing. The document contains a call-to-action button and embeds multiple URLs, including a redirector to a PDF hosted on weebly.com, suggesting it's part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6340

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://puwibovur.weebly.com/uploads/1/3/4/6/134639487/6841319.pdf.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://krisoc.ru/pbw?utm_term=newsela+moana+quiz+answers+key PDF link annotation
    • https://puwibovur.weebly.com/uploads/1/3/4/6/134639487/6841319.pdfIn PDF document text
    • https://lobamebit.weebly.com/uploads/1/3/5/3/135316634/zebozovusasipumezeje.pdfIn PDF document text
    • https://pugewolusaw.weebly.com/uploads/1/3/1/4/131453132/baxova.pdfIn PDF document text
    • https://xugimitedekilim.weebly.com/uploads/1/3/1/4/131482884/fewotewavofivadazis.pdfIn PDF document text
    • https://favaruzikab.weebly.com/uploads/1/3/4/8/134871436/10364e7ca3281.pdfIn PDF document text
    • https://didirivex.weebly.com/uploads/1/3/4/2/134265945/561ede0a47d03.pdfIn PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/fatege.pdfIn PDF document text
    • https://zawiwiguxasawum.weebly.com/uploads/1/3/0/7/130739629/menezidaxe.pdfIn PDF document text
    • https://mefutegisudaxat.weebly.com/uploads/1/3/4/3/134350432/kegamemusafidar.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/8009692.pdfIn PDF document text
    • https://ladulokepalixu.weebly.com/uploads/1/3/4/8/134878898/32f147e1.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/novajobibit-moridavixupe.pdfIn PDF document text
    • https://xezamojukugenu.weebly.com/uploads/1/3/5/3/135316948/basuketokef.pdfIn PDF document text
    • https://pomixorum.weebly.com/uploads/1/3/1/6/131606605/5198786.pdfIn PDF document text
    • https://rilumegunelado.weebly.com/uploads/1/3/4/6/134615428/3f2098c84.pdfIn PDF document text
    • https://sowozulame.weebly.com/uploads/1/3/4/7/134733070/rivenupev-sutobunumufa-rewalutabipetas.pdfIn PDF document text
    • https://saxigixerugeri.weebly.com/uploads/1/3/4/5/134585582/10ae6f23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8384a52c-76d3-4e2e-a623-50de7e9c5258/danny_phantom_season_1_episode_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/611f71ef-d8b4-45e9-8e7c-02064eb73926/xofemewijovipekikepefozin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/564fef4d-8a67-455d-9a57-d721ccd358f4/dagip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88309e38-518e-45a6-a1cc-05e6ed1d0221/96846230757.pdfIn PDF document text
    • http://togiwuvoze.pbworks.com/f/jezaweviguv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2103bd25-9f67-40fd-a3e0-2a6ff231a15d/luvutidikasamaxirezab.pdfIn PDF document text
    • http://figuduvimeti.pbworks.com/f/batman_arkham_knight_skin_codes_ps4.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000bdeac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEAC 5036 bytes
SHA-256: 91625cd6010732c0ab0b41cb9d45a80ef58835aa9fd6fce4955af44bc245f2f0
font_01_sfnt_off000befd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFD7 13060 bytes
SHA-256: cf5f6343864319430de37148b3240980b67aeb45bc0d4d080bb887d0d055fa6d
font_02_sfnt_off000c1acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1ACD 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378