Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5d5304786306fa…

MALICIOUS

PDF

76.1 KB Created: 2021-04-01 05:39:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 45c11a31719b78fdf4d86d43133a550b SHA-1: 98111d41b939439585676a46351f68f1be54886f SHA-256: de5d5304786306fa3d617c01ca44c6dfbb11b4d8df6132b14c146b06fe6fe5b9
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=comic+book+script+format+example In PDF document text
    • https://cdn.sqhk.co/dasekizob/jdVvjfl/employment_application_form_i-_9.pdfIn PDF document text
    • https://cdn.sqhk.co/fazituku/icjdqja/rebudakixotumadabadu.pdfIn PDF document text
    • https://cdn.sqhk.co/liregagibago/njj2ihd/anime_tiles_piano_music_apk.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/harlem_by_langston_hughes_poem.pdfIn PDF document text
    • http://gapilojazixo.getenjoyment.net/senofiremu.pdfIn PDF document text
    • https://cdn.sqhk.co/mukutosi/brwhdfq/80445804724.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/jcgivoO/66012748200.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/jfd9hgY/43496730405.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/zoxewudunigus/25629752253.pdfIn PDF document text
    • http://tuxefunuzire.atwebpages.com/critical_thinking_exercises_for_university_students.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/17720967241.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/solagewiweborew.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/9121646529.pdfIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_539c280d378448faadc9dcc6aa29f3ad.pdf?index=trueIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/33228023843.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/xuwadotujor.pdfIn PDF document text
    • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_923b8fb0e1f9479f8d31d4ad2dbb079e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/free_html_tutorial_for_beginners.pdfIn PDF document text
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_2c50671631b547a294420d688152adcd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zowibatev/vampire_5e_character_sheet_fillable.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/60343676009.pdfIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_4795d7abbc9741bf8429017c9b4b9360.pdf?index=trueIn PDF document text
    • https://37e0f79d-b0c1-4727-b76d-5b759c81288f.filesusr.com/ugd/9c66ff_aaf6918da9144ec085d49351420a923a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/timituvupame/silegekowupu.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_off0000eb23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB23 5340 bytes
SHA-256: 9007f2d7bb51166882038ce401fd23139722bda616f6263bb9f7fec614fe7ad9
font_01_sfnt_off0000fd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD36 11216 bytes
SHA-256: d557a0aef69351e76ed7c3185f9fd1d4af8430b8046774a59c796786fd68c848

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