Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e59dd56ddcaed8…

MALICIOUS

PDF

77.9 KB Created: 2021-05-19 10:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0859d52b7900771d9ae2ac485b70d6a0 SHA-1: 48ccc4e99b21d9262b33cc3be067d70219ade180 SHA-256: 74e59dd56ddcaed8b90a665aef5fdcbf4cda8117d5da85b20c1210d429d49b2c
164 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of a download button lure and a large number of external links suggests a phishing or malware distribution scheme. ClamAV also detected it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=how+to+write+a+certification+page+of+a+project PDF link annotation
    • https://vixekilawuta.weebly.com/uploads/1/3/4/3/134305586/9356770.pdfIn PDF document text
    • http://degapituva.iblogger.org/pole_emploi_attestation_simplifie_employeur.pdfIn PDF document text
    • https://pekesasopalono.weebly.com/uploads/1/3/4/5/134505129/sovejude.pdfIn PDF document text
    • http://bujaxodu.iblogger.org/business_model_canvas_free.pdfIn PDF document text
    • https://sukowuxipimo.weebly.com/uploads/1/3/4/3/134318810/dodafututa.pdfIn PDF document text
    • https://motodamoz.weebly.com/uploads/1/3/1/4/131452818/9b439a4de.pdfIn PDF document text
    • https://lezexoxutipeb.weebly.com/uploads/1/3/4/4/134462335/nasojigilevokagoguji.pdfIn PDF document text
    • https://suretazusidik.weebly.com/uploads/1/3/4/0/134012564/e96647647e.pdfIn PDF document text
    • https://febefadu.weebly.com/uploads/1/3/1/4/131453100/51a0c4c3d81.pdfIn PDF document text
    • https://xifalazixaxidig.weebly.com/uploads/1/3/0/8/130874217/41a11ff4e.pdfIn PDF document text
    • http://gonojokolekovo.22web.org/ffxiv_encyclopedia_eorzea_download.pdfIn PDF document text
    • http://rakajipof.22web.org/weber_concertino_clarinet_sheet_music.pdfIn PDF document text
    • https://waluxine.weebly.com/uploads/1/3/4/7/134759732/61b1cbddec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puredaw.rf.gd/dj_hey_bro_hd_video_song.pdfIn PDF document text
    • http://favekagopu.epizy.com/update_whatsapp_business_apk.pdfIn PDF document text
    • http://sovezogodum.rf.gd/mv_bts_love_yourself_answer_epiphany.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/vawumofukofesita.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/5758300101.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/57164602826.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/vobobuku.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/29743233641.pdfIn PDF document text
    • http://vesebebiwimana.epizy.com/breezing_forms_documentation.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/luxotapixuwolatuno.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/carreras_que_ofrece_la_universidad_de_toronto_canada.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF519 5104 bytes
SHA-256: 299a91e4df2e1f4851efb49fff25c42218926309dfe62829aa64da1dc57634eb
font_01_sfnt_off000106a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A1 10276 bytes
SHA-256: 35762769e7e111d9d7b70c3cb270e06429c3bad540f4a92a22e2791dee132b55

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