Malicious PDF — malware analysis report

Static analysis result for SHA-256 95eea47dbe8932e7…

MALICIOUS

PDF

74.3 KB Created: 2021-02-12 08:43:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0bb173eaffe30fdebda49e8da9f90890 SHA-1: 9c14d8200573592b00bef257b5a1779e7fa5e447 SHA-256: 95eea47dbe8932e7dd083fec5dbcb93f34ae7071f622ee3d485aa349986a137b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://jottigo.ru/wb?keyword=cisco%20firepower%20threat%20defense%20configuration%20guide PDF link annotation
    • http://italysummer.space/61069756779m02h6.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/9277406.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/bukawijodasiziw.pdfIn PDF document text
    • https://bunonosuvon.weebly.com/uploads/1/3/5/9/135976801/fuvetolofama-rusebabo-balilepowadod-sanupoxituledu.pdfIn PDF document text
    • http://goodxday.xyz/bollywood_video_song_hd_2018x1j6x.pdfIn PDF document text
    • https://ruwagifixub.weebly.com/uploads/1/3/4/0/134013037/puwodadu-goniliz-kumuvukizala-vawimepasat.pdfIn PDF document text
    • http://mebelrostov.ru/poe_temple_of_atzoatl_room_guide4swpr.pdfIn PDF document text
    • https://mejatuwunuzawe.weebly.com/uploads/1/3/0/7/130775850/7841948.pdfIn PDF document text
    • https://melinifijegor.weebly.com/uploads/1/3/4/2/134265386/wokisovexasenano.pdfIn PDF document text
    • http://nudistoff.club/tinuzisodazevobhylg.pdfIn PDF document text
    • https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/575af5b0bc.pdfIn PDF document text
    • https://detaxenenikub.weebly.com/uploads/1/3/0/7/130776267/xemanajafubixizagane.pdfIn PDF document text
    • https://jumolemema.weebly.com/uploads/1/3/4/8/134853288/07b66dfd29.pdfIn PDF document text
    • http://wersita.fun/introducing_sociolinguistics_meyerhoffilzqd.pdfIn PDF document text
    • https://xitozenajoxoge.weebly.com/uploads/1/3/2/6/132681812/fabotejalil-fazaduvidufunos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kubafezin/genres_of_literature_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/87251557128.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/brand_equity_questionnaire.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/how_i_treat_acquired_aplastic_anemia.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_off0000e49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49D 5380 bytes
SHA-256: 077374df267e73908ef6e081055d36a95478f38e3480989b9989ea264e5a985a
font_01_sfnt_off0000f6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FD 10892 bytes
SHA-256: f7af046f3b5871d66c37598b9fbcc0fa871de71894d4513a9168e0519046823d

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